FAQ Database Discussion Community

## Loop throught list in R [on hold]

r,for-loop
I am new to R. Get stuck in my homework: Create a list with length 10: for the first component list[[1]], the dimension is 1, the second is 1*2, the third is 3*3, the fourth is 4*4, and so on. The values should be selected randomly from 1:100. For each...

## Combining multiple for loops into one using the OR operator

c++,if-statement,for-loop
This is probably a simple question, but I can't get it to work. I've searched and have tried all the suggestions people gave for the OR operator ||, but my code just won't properly use it. So here's what I've got: This part of my code looks at a vector...

## How to stop a decreasing iteration after xth element?

php,for-loop,iteration
So I have a for loop that is decreasing... for (\$i=count(\$array); i>0; \$i--;) { if(condition) {DO SOMETHING like print the element in a decreasing manner} if(enter ending iteration condition here after xth element) break; } that pretty much sums up my question. How do I formulate the ending iteration -...

## Continuous to discrete cut quartile in R from for loop

r,loops,for-loop,cut,quartile
I am trying to create a bunch of columns that are quartile cuts based on multiple columns. For example, dataset[,412:422] <- NA for( i in 50:60){ for(j in 412:422){ dataset[,j] <- cut(dataset[,i], breaks=unique(quantile(dataset[,i],probs=seq(.1,1,by=.1),na.rm=T)), include.lowest=TRUE) } } I want to create new columns 412 to 422 based on the binning of...

## R Creating a Character Column from a Numeric Column w/o using For Loop

r,for-loop,mapping,character,lookup
I am trying to create a column of characters based on an existing column of numbers, preferably without using a for loop. I have come up with a variety of ways to do this, but I keep feeling like I'm making this far more complicated than it needs to be....

## for of loop querySelectorAll

Mozilla states that "for of loops will loop over NodeList objects correctly". (source: https://developer.mozilla.org/en-US/docs/Web/API/NodeList) However, this doesn't work in Chrome 43. Is this incorrect documentation or a browser bug? The copied example code used on a page with checkboxes: var list = document.querySelectorAll( 'input[type=checkbox]' ); for (var item of list)...

## iteration (for-loop) ms Access with past value

vba,for-loop,access-vba,iteration,recordset
I tried to translate a code from VBA excel to access. My data is a column of prices and I want to compute the returns. This is the original VBA code in excel: DerCol = Cells(T.Row, Columns.Count).End(xlToLeft).Column Cells(T.Row, DerCol + 1) = "Returns" For i = T.Row + 2 To...

## swift iterate on array

json,swift,for-loop
i would like to ask a little help. I have a method which call a webservice and get a json object from it. it's look like this way: func wsServiceFeedTst() { println("WS called...") println("tstFrames count: " + tstFrames.count.description) let json = JSON(url:"http://79.172.249.175:7001/RestWebServiceApp/webresources/entity.bkkkallerfeedtst") println(json) for (k, v) in json["bkkKallerFeedTst"] { let...

## iterating over a table passed as an argument to a function in lua

for-loop,lua,iterator,lua-table
I am trying using the for _ in pairs() notation to iterate over a table within a function, but if I type anything, even gibberish like print('asdgfafs'), nested inside the for loop, it never gets printed. Code: record = {bid1,bid2,bid3} bid1 = {bidTime = 0.05,bidType = 'native'} bid2 = {bidTime...

## TIme complexity of various nested for loops

loops,for-loop,big-o,time-complexity,asymptotic-complexity
Time Complexity of a loop is considered as O(Logn) if the loop variables is divided / multiplied by a constant amount. loop 1 ---- for (int i = 1; i <=n; i *= c) { // some O(1) expressions } loop 2 ----- for (int i = n; i >...

## Iteratively adding new columns to a list of data frames

r,list,for-loop,data.frame
I am trying to write some code that iterates through a list of data frames, adding to each a new column that contains the same values as an older column but shifted by 1. The first value in this column will be NA. Below is my code: for(dataframe in 1:length(listOfDataFrames)){...

## Create an object that contains an array of objects with a for loop

javascript,for-loop
I would like to create on JavaScript an object of one array (line_items_object) that contains objects with a for loop like this structure: var data = { line_items_object: [ { id: 8111696 }, { id: 8111688 } ] }; How can I do that? ...

## How to push row of two-dimensional array to object

javascript,arrays,for-loop
I have the following array: var myArray = [ [47,22,11], [28,5,1], [22,11,11] ] And I need the following structure: var myStructure = [ { Pass: 47, Warning: 22, Fail: 11}, { Pass: 28, Warning:5, Fail: 1}, { Pass: 22, Warning:11, Fail: 11;}, ]; How can I do that...

## Why cant I refer to a random index in my 4D list, while I know it exists?

c#,list,for-loop,dimensions
I got a 4D list, and I want where I want to display only the [k][3][j][z], but this isnt working. I checked all the counts and they are all 5+, so 3[4] should work... for (int k = 0; k < lijst4D.Count; k++) { for (int i = 0; i...

## Retrieve index of newly added row - for loop in R

r,for-loop,indexing
I am trying to retrieve the index of a newly-added row, added via a for loop. Starting from the beginning, I have a list of matrices of p-values, each with a variable number of rows and columns. This is because not all groups have an adequate number of treated individuals...

## Printing off the content of Array or Set using for loop

arrays,swift,for-loop,set,println
When trying to print off the content of Set or Array using for loop I don't receive values but number of them. For example: var favouriteSports: Set = ["Snowboarding", "Skateboarding", "Surfing"] for genre in favouriteSports { print("\(genre)") } What I wanted to receive in console is "Snowboarding, Skateboarding, Surfing" but...

## I have an Array of 2 objects, when I use a for loop, both of the object gets the change that only one of them should have

java,arrays,for-loop,libgdx,box2d
Basically I have this code : for(int i = 0; i < tnt.size; i++){ TNT t = tnt.get(i); if(cl.isVänster()){ t.getBody().setLinearVelocity(6,0); } if(cl.isHöger()){t.getBody().setLinearVelocity(-6,0); } if(t.getBody().getPosition().x > 1888/PPM){t.getBody().setLinearVelocity(-6,0); } if(t.getBody().getPosition().x < 31/PPM){t.getBody().setLinearVelocity(6,0);} } What happens is if I have 2 objects in this Array, when something happens to object #1 it gets...

## consistent matched pairs in R

r,for-loop,matching
So using the Matching Package (Link to package here) We can work through a modified GenMatch example. library(Matching) data(lalonde) #introduce an id vaiable lalonde\$ID <- 1:length(lalonde\$age) X = cbind(lalonde\$age, lalonde\$educ, lalonde\$black, lalonde\$hisp, lalonde\$married, lalonde\$nodegr, lalonde\$u74, lalonde\$u75, lalonde\$re75, lalonde\$re74) BalanceMat <- cbind(lalonde\$age, lalonde\$educ, lalonde\$black, lalonde\$hisp, lalonde\$married, lalonde\$nodegr, lalonde\$u74, lalonde\$u75, lalonde\$re75, lalonde\$re74,...

## For-loop does not go over all objects

python,list,for-loop
Why does this for-loop not go through all items: temp = 0 for br in my_list : temp +=1 #other code here #my list is not used at all, only br is used inside here my_list.remove(br) print temp assert len(my_list) == 0 , "list should be empty" So, assertion fires....

## php for loop of an array

php,html,arrays,for-loop
I have an html form that passes an array into php and then does a for loop to print out values. This is the code that I have \$payloads = \$_POST['topay']; \$loadNum = \$_POST['loadnum']; \$unit = \$_POST['unit']; \$driver = \$_POST['driver']; for(\$i=0;\$i<count(\$payloads);\$i++) { echo \$payloads[\$i]; echo "<br>"; echo '<td width="50" valign="top">'.\$loadNum[\$i].'</td>';...

## How to use list comprehensions to make a dict having list of list as values

python,list,for-loop
I Have a list as following and I want to convert that as output shown below using List comprehensions. Any help is appreciated. a = [{'type': 'abc', 'values': 1}, {'type': 'abc', 'values': 2}, {'type': 'abc', 'values': 3}, {'type': 'xyz', 'values': 4}, {'type': 'xyz', 'values': 5}, {'type': 'pqr', 'values': 6}, {'type':...

## Java print result every 10th iteration of a for loop

java,for-loop
I'm trying to write simple function to print a message every 5th or 10th iteration of for loop. for example: In this code I want to print i each tenth iteration: private void calc() { int broadcast_by_percent = 100 / 10; int calculate = 0; for (int i = 0;...

## How to fill array with random values 1-110

java,arrays,for-loop,random
I want to fill tab[110] array with random bits (so 1 and 0). Don't know how to fill with values 1-110, but not 0-109. My for-loop: for (int i = 0; i<tab.length; i++) { Random r = new Random(); tab[i] = r.nextInt(2); if (i%25==0) { System.out.println(""); } System.out.print(tab[i]+"("+i+")"+", "); }...

## Jekyll and Liquid for-loop

I want to create a little side navigation vor on-page navigation. The site contains multiple images one above the other, the navigation is inside every single image and is linking to the individual id's. I am using jekyll with the liquid templating engine. To not hard code every single element...

## For loop not only passing once

for-loop,selenium-webdriver
String[] expected = new String[10]; //{"Acapulco","Frankfurt","London","New York","Paris","Portland","San Francisco","Seattle","Sydney","Zurich"}; expected[0] = "Acapulco"; expected[1] = "Frankfurt"; expected[2] = "London"; expected[3] = "New York"; expected[4] = "Paris"; expected[5] = "Portland"; expected[6] = "San Francisco"; expected[7] = "Seattle"; expected[8] = "Sydney"; expected[9] = "Zurich"; List<WebElement> allOptions = driver.findElements(By.name("fromPort")); // match the fromPort list...

## Can not figure out how to print second dimension in three dimension List

c#,list,for-loop,dimensions
I am making lists in three dimensions. If I run my code it shows the following strings: list5 + list3 + list1. Now this is in three dimensions, so each dimension adds a word. If you look to the code there will be displayed: 4*4*4 = 64 possiblities. Now I...

## GET request inside of a loop in JavaScript

javascript,jquery,for-loop,get
So, my code looks something like for(int n = 0; n < object.length; n++){ /*Other code */ \$.get(...,function(data){ //do stuff });} Now, the other code executes multiple times like it should. However, when the get command is ran, it is only ran once and that is when n reaches the...

## Matlab Reintroduction of AR and GARCH processes

matlab,for-loop,return,time-series,volatility
I am trying reintroduce autocorrelation and heteroskedasticity to my simulated residuals. My simulated (standardized) residuals have the dimension (horizon, nTrials, nIndices). In order to calculate today's mean / variance (i.e. t), I need to use the last periods mean /variance (i.e. t-1) as an input. This is where I am...

## Matlab: For loop with window array

arrays,matlab,math,for-loop,while-loop
This is my one dimensional array A, containing 10 numbers: A = [-8.92100000000000 10.6100000000000 1.33300000000000 ... -2.57400000000000 -4.52700000000000 9.63300000000000 ... 4.26200000000000 16.9580000000000 8.16900000000000 4.75100000000000]; I want the loop to go through like this; (calculating mean interval wise) - Interval length of 2,4,8 (a(1)+a(2))/2 - value stored in one block of...

## How to iterate through a table in its exact order?

loops,for-loop,lua,order
If i try to output this table, they are looped through in the false order: local letters = {DIN1="hi", AIN1= "my", AIN2 ="name", DIN2="is"} for name, value in pairs(letters) do print(name,value) end Expected Output: DIN1 hi AIN1 my AIN2 name DIN2 is Output: AIN1 my DIN2 is DIN1 hi AIN2...

## for loop vs for loop in reverse: performance

javascript,performance,for-loop
According to What's the Fastest Way to Code a Loop in JavaScript? and Why is to decrement the iterator toward 0 faster than incrementing , a basic for loop is slower than a for - loop with simplified test condition, i.e.: console.log("+++++++"); var until = 100000000; function func1() { console.time("basic")...

## Converting Object Names to Strings in AS2

string,object,for-loop,actionscript-2,movieclip
So i've made an object called "potato", then started a loop to check if something in "_level0" has the name of "_level0.potato". What i think is that since the the things in _level0 are objects instead of strings, the object name can't be recognized as a string, so im guessing...

## How to build a 'for' loop with input\$i in R Shiny

r,loops,for-loop,shiny
In my shiny app, I build a a number of checkboxes using a for loop, like this: landelist <- c("Danmark", "Tjekkiet", "Østrig", "Belgien", "Tyskland", "Sverige", "USA", "Norge", "Island") landecheckbox <- c() for (land in landelist){ landechek <- paste0("<label class=\"checkbox inline\"><input id=\"", land, "\" type=\"checkbox\" checked><span>", land, "</span></label>") landecheckbox <- c(landechek,...

## Matlab loop not working properly

matlab,loops,for-loop
largest = 0; num = 0; temp = 0; num_flip = 0; for x = 100 : 999 for y = x : 999 num = x*y; temp = num2str(num); num_flip = str2double(fliplr(temp)); if num/num_flip == 1 largest = num; one = x; two = y; end end end I'm...

## Understanding the for loop in java

java,for-loop
I'm new to java as you can see. I can't seem to understand why these two codes have different output. Please explain it to me. What is the difference of y<=x; and y<=5;. As you can see the x is = 5 too, I don't get why I get different...

## Combine or merge 2 array with loop or function

c,arrays,for-loop,merge
I'm new to the C world. I'm using Visual 2010. I need to create an array from 2 other arrays, or a function to merge them; I come from PHP so I'm sorry if this is stupid. I tested some loop without success.. a real example could be helpful: int...

## Count neighboring cells

java,function,for-loop
I don't understand what is wrong with this loop, it normaly would check the surrounding cells of (x,y). When calling this function, there is only 4 passages in the loop and not 8 This is probably a stupid mistake but I cant see it ! private int countAliveNeighbors(int x, int...

## concurrent modification on arraylist

java,for-loop,arraylist,concurrentmodification
There are a lot of concurrent mod exception questions, but I'm unable to find an answer that has helped me resolve my issue. If you find an answer that does, please supply a link instead of just down voting. So I originally got a concurrent mod error when attempting to...

## How to stop handler.postDelayed in for-loop?

java,android,for-loop,handler,runnable
I saw no real answer for this type of using "handler.posDelayed". So, I execute "handler.posDelayed" multiple times with a for-loop. The problem is, when I leave the activity and restart it, the new objects AND the old ones from the handler are executed too. I don't know, how to stop...

## System.ArgumentOutOfRangeException in For loop due to entry deleted from database. Help fix it

database,vb.net,for-loop,indexing
Private Sub Button1_Click(sender As Object, e As EventArgs) Handles Button1.Click Dim TimeNow As DateTime TimeNow = DateTime.Now With ReservationTableDataGridView For i As Integer = 0 To (.Rows.Count - 1) ListView1.BackColor = Color.Black Dim ToBeTested As DateTime ToBeTested = (.Rows(i).Cells(1).Value) # Console.WriteLine(ToBeTested) If ToBeTested > TimeNow.AddMinutes(45) Then Me.ReservationTableTableAdapter.Delete((.Rows(i).Cells(4).Value), (.Rows(i).Cells(1).Value), (.Rows(i).Cells(2).Value), (.Rows(i).Cells(3).Value))...

## Run 3 variables at once in a python for loop.

python,loops,variables,csv,for-loop
For loop with multiple variables in python 2.7. Hello, I am not certain how to go about this, I have a function that goes to a site and downloads a .csv file. It saves the .csv file in a particular format: name_uniqueID_dataType.csv. here is the code import requests name =...

## How to remove all Objects in For Loop?

actionscript-3,for-loop,flash-cs6
Hey Everyone So I know this has to be really Simple I am over complicating it and can't figure out how to do it. So I have these stars moving in the background in my startScreen and I want to remove them when the Game starts. Here is How I...

## Objective C for loop delay

objective-c,for-loop,cocos2d-iphone,delay,grand-central-dispatch
I have a for loop that I want to add a delay between iterations. I have changed waitUntilDone to YES and get the same results. My array only has two numbers in it and both are called after the five seconds instead of: 0s - nothing 5s - Block called...

## Matlab: Looping through an array

matlab,loops,for-loop,while-loop,do-while
This is my one dimensional array A. containing 10 numbers A = [-8.92100000000000 10.6100000000000 1.33300000000000 ... -2.57400000000000 -4.52700000000000 9.63300000000000 ... 4.26200000000000 16.9580000000000 8.16900000000000 4.75100000000000]; I want the loop to go through like this; (calculating mean interval wise) - Interval length of 2,4,8 (a(1)+a(2))/2 - value stored in one block of...

## Set up a for loop to fill image src's

javascript,html,xml,for-loop
So I'm sending a request to NASA's APOD API and receiving back an array of info, part of which is an image url. I need to perform this action multiple times, and am wondering how to set this up as a for loop, or maybe just a function(?). The HTML...

## Display text once within for loop on the first loop

php,for-loop
I have SQL query inside a for loop and I want to echo something of success of these query only once. Here is part of my code <?php for(\$i=0;\$i<sizeof(\$assigned_project_id);\$i++){ \$sql2="SELECT * FROM assign_task INNER JOIN branch ON assign_task.branch_ID=branch.branch_ID WHERE project_ID=".\$assigned_project_id[\$i]." AND USER_ID=1"; \$query2=mysqli_query(\$con,\$sql2); if(mysqli_num_rows(\$query2)>0){ echo" You have Assigned following Reports";...

## Tallying incorrect answers for Javascript game

javascript,for-loop
So I am trying to make a javascript game for my geography class but I have run into some trouble, I can ask the questions and tell you if you're wrong or not but I would like to be able to keep track of the wrongs answers. I want to...

## Parallel for loop with reduction and manipulating arrays

c,for-loop,openmp,pragma
I'm new to openMP and I try to optimize for loop. The result is not as expected, the for loops are not working correctly (due to dependency). I don't understand how to get a perfect parallel loop with the examples below : #pragma omp parallel for default(shared) reduction(+...) for(i =...

## How can I set OptionButton font using VBA For Loop?

excel,vba,excel-vba,loops,for-loop
I am trying to manually set every OptionButton's font on a sheet to be a uniform size and type using a For Loop. I can do them manually by writing out each specific button's information but I have hundreds of buttons. I can even get VBA to write the correct...

## Switching between date format in a for loop; Python

python,date,if-statement,for-loop
The date in my data is stored in two different formats: Dienstag 31. Dezember 2013 and 30. Juni 2007 I wrote scripts to extract Year/Month/Day from both formats and store them in a list: for row in reader: line_count = line_count + 1 if row[1] == "DATE": pass else: date...

## How to get get max value in java? [closed]

java,for-loop,max
I am writing a program that finds the taxes based on a person's income. So far the problem I am running into is some numbers that come out don't round up two decimal places and keep on going and I don't know how to get the max out of all...

## How to sort multidimentional array

c++,c,sorting,for-loop
New to coding ! After many attempts to use sort without success, here my actual code : #include <algorithm> #define N 5 int a[N] = { 3, 6, 2, 4, 1 }; int b[N] = { 6, 3, 1, 2, 9 }; int c[N][3]; for ( size_t i = 0;...

## Using function “cat” with “replicate” in R

r,for-loop,cat,replicate
Is there a way how to combine function "cat" with function "replicate" in R? I want to see number of "loops" R has already made at a particular moment. However, instead of using "for" loop, I prefer to use "replicate". See the simple example below: Data <- rnorm(20,20,3) # with...

## NSMutableArray adds same NSDictionary multiple times

ios,objective-c,for-loop,nsarray,nsdictionary
I am looping through an array, getting two items and putting them in a dictionary, and then add them to an array, but it keeps adding the last item of the array for the number objects in the array, even though when I log the dictionary inside the loop it...

## Java for loop only executing once

java,for-loop
Sorry to ask such a basic question but other questions on here don't seem to fix the problem and I've been staring at it for quite a while now. I'm writing some code to find the smallest common multiple for the numbers from 1 to 20. From debugging, the outer...

## Matlab Calculating mean of distribution quantile in a for-loop

matlab,loops,for-loop,distribution,quantile
I am trying to calculate portfolio cVaR (conditional value at risk) levels from my simulated data for various portfolios. I am able to do that for one single portfolio using the following code: % Without a for-loop for series 1 test2 = test(:,1) VaR_Calib_EVT = 100 * quantile(test2, VarLevel_Calib); help1...

## Refering to Integer inside String? Python

python,for-loop
How do you refer to an integer inside a string, using python? I am completely new to coding and I am trying to do this bug collection exercise where the user will input the number of bugs collected each day for a week and be presented the total number of...

## Why does my nested for-if loops load much slonger when I dont nest this? And can I possibly fix this?

c#,excel,if-statement,for-loop,nested
Sorry if the question if a bit vague, but the code is very complicated and I hope you will have the right eye to see and understand it :) I will show 2 sort codes. The codes just read an excel sheet and depending on the text it contains, it...

## C++ Same name local variables keeping values between loops [closed]

c++,loops,for-loop,local-variables
I have the following 2 loops in my C++ code: for (int hcount = 0; hcount < height; hcount++) { for (count = 0; count < width; count++) { cout << character; } cout << endl; } cout << endl; for (int hcount = 0; hcount < height; hcount++); {...

## Array stored in array gets overwritten to the contents of the last one added

java,arrays,for-loop
Maybe it's something simple I'm missing, but I can't seem to figure out why my array of arrays is being overwritten with the last value in that is put into the array. This is my code: import java.util.Arrays; import class.ArgsProcessor; public class Dice { public static void main(String[] args) {...

## Python For Loop Using Math Operators

python,for-loop
Ok, I'm in the process of learning Python, and had a quick question about for loops. I was wondering if you could use math operators in them, like JavaScript. For example, could I do: for i = 0, i < 5, i++: #code here Now, I'm quite aware that Python...

## Using a for loop to search array

java,arrays,for-loop
I am working on an assignment and am stuck on one part. Searching my array to see if it contains the number 4. I am also having the problem of that answer repeating 10 times. I know why that is happening I just don't know how to fix it. I...

## python compare items in 2 list of different length - order is important

python,list,loops,for-loop,indexing
list_1 = ['a', 'a', 'a', 'b'] list_2 = ['a', 'b', 'b', 'b', 'c'] so in the list above, only items in index 0 is the same while index 1 to 4 in both list are different. also, list_2 has an extra item 'c'. I want to count the number of...

## Doubts with for loop in Unix

bash,shell,unix,for-loop
Sorry if its sounds dumb but I'm currently studying for an exam to apply for a job (administrative one) and I learnt about java, php, python but not much about unix scripts. I can see it's very similar to php in structure and I have many questions about it ....

## looping variable in swift

swift,for-loop,uiimage
i want to change this variable become looping in swift: var image1 = UIImage(named: "image1") var image2 = UIImage(named: "image2") var image3 = UIImage(named: "image3") var image4 = UIImage(named: "image4") var image5 = UIImage(named: "image5") var image6 = UIImage(named: "image6") var image7 = UIImage(named: "image7") images.append(image1!) images.append(image2!) images.append(image3!) images.append(image4!) images.append(image5!)...

## Error using range-based for loop - Eclipse CDT Luna

templates,c++11,for-loop,mingw,eclipse-luna
I am a beginner at C++ programming. I tried to write a very simple program that combines the use of templates, passing arrays as arguments to a function and a range-based for loop. This is the program that I wrote and compiled using the Eclipse Luna CDT software. #include <iostream>...

## Time complexity of if-else statements in a for loop

if-statement,for-loop,time-complexity,asymptotic-complexity
Let A[1, …, n] be an array storing a bit (1 or 0) at each location, and f(m) is a function whose time complexity is θ(m). Consider the following program fragment written in a C like language: Case 1 :- counter = 0; for (i = 1; i < =...

## Why is my C code printing out an extra line of rows?

c,loops,for-loop,macros,printf
#include <stdio.h> #define rows 500 //can define rows as any number int main() { int i,j; for(i=0;i<=rows;++i) { for(j=0;j<(2*i+1);++j) { printf("* "); } printf("\n"); } return 0; } So here is my code, what it does is it prints the number of rows set by #define and creates a right...

## bash - for loop for IP range excluding certain IPs

I have the below for loop for ip in 10.11.{32..47}.{0..255} do echo "<ip>\${ip}</ip>" done I want to exclude this iprange: 10.11.{32..35}.{39..61} from the above for loop. This ip range is a subset of the above one. Is there a way to do that? I tried this, this doesn't work: abc=10.11.{34..37}.{39..61}...

## Can javascript for loop starts from negative number? [closed]

javascript,jquery,loops,for-loop
Here is a standard for loop: for (i=0; i<=5; i++) { el.append('<span>' + i + '</span>'); } This should append 11 spans with text from -5 up to 5, but this doesn't work at all... for (i=-5; i<=5; i++) { el.append('<span>' + i + '</span>'); } Is it possible to...

## How to create an item list to use multiple times on a Jinja2 template page?

I want to create an HTML option list and display it multiple times on the template page. I tried to iterate through the list passed on to the template but this seems only to work once on the page: {% for item in points %} <option value="{{ item }}">{{ item...

## Filling PHP array with “for” loop

php,arrays,for-loop,population
I'm trying to populate an array in PHP as following : <?php \$maxPages = 20; for (\$i = 0; \$i <= \$maxPages; \$i++) { \$url = 'http://127.0.0.1/?page='.\$i; \$targets = array( \$url => array( CURLOPT_TIMEOUT => 10 ), ); } print_r(\$targets); ?> However it only seems to display the last populated...

## for-loop add columns using SQL in MS Access

sql,ms-access,table,for-loop,iteration
I am trying to add n columns to a table, like in this example of code where n = 10: Sub toto() Dim db As Database, i As Integer Set db = CurrentDb() For i = 1 To i = 10 db.Execute " ALTER TABLE time_series " _ & "ADD...

## Add XElement dynamically using loop in MVC 4?

c#,xml,asp.net-mvc-4,for-loop
i will like to add the Xelement in Xdocument but how can i add in dynamically using loop? I need to capture the user multiple answer and generate the Xelement dynamically. Please guide me or provide any hint. Thanks alot! [HttpPost] public ActionResult SURV_Answer_Submit(List<AnswerQuestionViewModel> viewmodel, int Survey_ID, string Language) {...

## Create a Triangular Matrix from a Vector performing sequential operations

r,for-loop,matrix,vector,conditional
I have been trying to solve the following problem. Suppose I have the following vector: aux1<-c(0,0,0,4,5,0,7,0,0,10,11,12) where the numbers represent the number of the row. I want to calculate the distance between the differents elements of this vector fixing the first component, then the second and so on. If the...

## Batch For Do Test if exist rename url link on desktop

batch-file,for-loop
Why does this not work? I want to test each users desktop for a file and then if it is there, rename it. FOR /F "tokens=*" %%G IN ('DIR c:\users /B') DO if exist "C:\Users\%%G\Desktop\My Link With Spaces.url" ( rename "C:\Users\%%G\Desktop\My Link With Spaces.url" "My NEW Link With Spaces.url" )...

## How to dynamically name my object params in this lodash loop?

javascript,loops,for-loop,lodash
https://lodash.com/docs#find var params = {}; _.forEach(n.tags, function(n, index) { console.log(index); index++ // For each tag, create new param.term1, term2, term3 etc... params.term[index] = _.result(_.find(n.tags, function(term_id) { return term_id; }), 'term_id'); }); The _.forEach will loop over n.tags (which contains up to 3 tags). I iterate the index++ by 1 so...

## Cancel last line iteration on a file

python,python-3.x,for-loop,file-io
I need to iterate on a file, stop iteration on a condition and then continue parse the file at the same line with another function (That may change so I can't just add content in the previous function). An example file (file.txt) : 1 2 3 4 5 6 7...

## Matlab: Writing to a file

arrays,matlab,loops,math,for-loop
I want to store mean_2....mean_8, std_2....std_8, and coVariance as separate columns in a file. Help Please? This Code calculates IntervalFeatures of Erp signal with 256 time frames and plots them Datapoints are store in A ___________HowTheCodeWorks________________________________________________ each 1x4 sliding sub-matrix is made a column for eg:- if A is...

## Why does this loop return a value that's O(n log log n) and not O(n log n)?

loops,for-loop,time-complexity,nested-loops,asymptotic-complexity
Consider the following C function: int fun1 (int n) { int i, j, k, p, q = 0; for (i = 1; i<n; ++i) { p = 0; for (j=n; j>1; j=j/2) ++p; for (k=1; k<p; k=k*2) ++q; } return q; } The question is to decide which of the...

## Change a Script to a For Do Done Loop

linux,bash,for-loop,awk
I have a script that I need to turn into a loop, the script works exactly as I need it to (My Awk-fu is extremely weak, so be nice) when I put in the file name like the example below. #!/bin/bash awk -v FS='(<LastName>|<\/LastName>)' '{print \$2}' 17822624.xml >> test.csv awk...

## Item not being properly indexed in PHP array inside of for loop

php,arrays,for-loop,attachment,binaryfiles
I have a for loop that is pulling attachments from email using PHP's IMAP functions. This works fine for one attachment, but it is unable to pull more than one attachment from a single mail. See code below - for (\$i = 0; \$i < \$count; \$i++) { \$attachments[\$i] =...

## matlab Create growing matrix with for loop that grows by 3 per loop

matlab,loops,for-loop,matrix
So I have written this: HSRXdistpR = squeeze(comDatape_m1(2,7,1,:,isubj)); HSRXdistpL = squeeze(comDatape_m1(2,4,1,:,isubj)); TocomXdistp = squeeze(comDatape_m1(2,10,1,:,isubj)); for i = 1:2; HSRXp = NaN(8,3*i); HSRXp(:,i*3) = [HSRXdistpR(:,i) HSRXdistpL(:,i) TocomXdistp(:,i)]; end In the first part I am just selecting data from a 5-D matrix, nothing special. All that's important here is that it creates...

## How are the results for count different in all these three cases?

python,for-loop,while-loop,break
Code 1: iteration = 0 count = 0 while iteration < 5: for letter in "hello, world": count += 1 print "Iteration " + str(iteration) + "; count is: " + str(count) iteration += 1 Code 2: iteration = 0 while iteration < 5: count = 0 for letter in...

## Create a new loop without quotation marks

python,string,for-loop
I wrote a function on python that should print the sentences below. def write_to_file(matrix, path): f = open(path, "w") f.write('\r\n') for i in range (2,5): item = (bestQuarterRate(matrix, i)) item = (str(item)) print item f.write(item) f.close() The problem is that I get this: ('Highest quarter rate is between', '1/1/15', 'and',...

## VHDL average of Array through for loop

arrays,for-loop,vhdl,moving-average
I have an Array of X Integer values in VHDL declared as a variable inside a process. I would like to calculate the average of all Values in a for loop. If I write it out for 3 Values manually everything works fine (tested on hardware): entity MyEntity is Port(...

## printing an string in cross manner using c program

c,arrays,loops,for-loop,multidimensional-array
I'am trying to write a program for converting the given string in cross manner(i.e Diagonal from left-right and from right-left). If the string length is even it returns a message else arrange it in a cross form. The code is: #include<stdio.h> #include<string.h> int main() { char str[50]; char str2[50][50]; int...

## How to retrieve filtered data from json with double for loop

javascript,json,loops,for-loop,filter
So i have build up this json file (http://www.smartbustracking.be/json/data.json) and now i am able to retrieve data. but what i would like to achieve is to filter data based on id with a for loop. i am able to show one item of a specific id but not all the...

## Javascript: Forloop Difference between i++ and (i+1)

javascript,loops,for-loop
I was building a javascript for loop and I want to compare the value of an array to the next value in the array. If both values are not equal, I want to return true, otherwise I want to return false. In the code below I pass the string "aba",...

## R vector looping confusion [closed]

r,for-loop,vector
I'm learning R and I have tracked down a problem in my code to an expectation of what looping over a vector would do. Here's what I'm confused by--say I've got a numeric vector with two nonconsecutive elements in it. x <- c(1, 3) If I loop through the vector...

## c# nested if/else in a for loop

c#,if-statement,for-loop
I have a nested if/else statement in a for loop to determine whether or a a value is valid with an array value. It returns all values just fine, however if the IF is correct, it still does the else an additional three times. I thought once it was equal...

## For loop - 2 arrays

javascript,arrays,for-loop,sum
I'm a beginner and I've been stuck for hours. I have problems with a simple for loop. I want an alert box that gives me the sum of the bars controlled by the player (it's part of the code for a simple boardgame) This is my code: var districts =...

## Using for loop indices in variable generation SAS

for-loop,sas
I would like to set up a for loop in SAS where I would like to create time dependent tables. The idea is rather simple. I have multiple tables where I would like to left join them and i would like to this operation for every month. I dont have...

## Making var 's in a for-loop

c#,for-loop,var
It is hard to explain but I will show an example of what I want in my code: At the moment I do it this way: var something1 = new (Microsoft.Office.Interop.Excel.Worksheet)appExcel.Worksheets.Add(Type.Missing, appExcel.Worksheets[appExcel.Worksheets.Count], 1, XlSheetType.xlWorksheet); var something2 = new (Microsoft.Office.Interop.Excel.Worksheet)appExcel.Worksheets.Add(Type.Missing, appExcel.Worksheets[appExcel.Worksheets.Count], 1, XlSheetType.xlWorksheet); var something3 = new...

## GPA Calculator in C

loops,for-loop,do-while
I'm trying to get this code to calculate a class's average GPA. The problem I'm having is that I seem to have made a mistake in my do...while code, because, when I run it, it constantly loops back to asking me to input another GPA, rather than asking if I...

## For Loops Not Always Updating C# [duplicate]

c#,for-loop
This question already has an answer here: Random number generator only generating one random number 7 answers I've run into a strange issue. When I run the following code, each of my text boxes get's filled with the same randomly generated number. public void diceAdd() { int[] die =...

## Javascript For Loop with Iterator In the Middle and Decrement Operator to the Left of i?

javascript,for-loop,syntax,decrement
For a non-recursive example of a factorial function I found this example and am having a little difficulty tracing through the code: function fact(x) { if(x == 0) { return 1; } if(x < 0 ) { return undefined; } for(var i = x; --i; ) { x *= i;...

## Java - allocation in enhanced for loop

java,for-loop,memory
I have small problem in java with allocation of my object in "enhanced for loop". I tried something like this, which gives me later nullPointerException: SomeClass tab[] = new SomeClass[100]; for( SomeClass x : tab){ x = new SomeClass(); } So... Earlier I code in C++ and It was possible...

## What's the fastest way to compare point elements with each other？I have used Nested for loop to do that, but it's very slow

c++,opencv,for-loop,dictionary,vector
I want to find the points which the distant between points less than 3.For example, some points as follow, (220,221)(220,119)(220,220)(20,90)(220,222). I use (220,221) to find points.Then i can get (220,221)(220,119)(220,220)(220,222) I use (220,119) to find points.Then i can get (220,221)(220,119)(220,220) I have used Nested for loop to do that, but...

## An easier way of referring to the index of a desired dictionary (Python)?

python,for-loop
Question feels like it's phrased poorly, feel free to adjust it if you agree and know how better to phrase it. I have the following code: def owned_calendars(cal_items): """Returns only the calendars in which the user is marked as "owner" """ owner_cals = [] for entry in cal_items: if entry['accessRole']...