I'd like my classes to have a string representation which is based on a class variable (which may be different in derived classes). This answer suggests that metaclasses might be the way to go: class MC(type): def __repr__(self): return 'Wahaha!' class C(): __metaclass__ = MC print(C) But this doesn't work...

Suppose I have the following table schema MONTH VARCHAR(10) HASRAIN BOOLEAN YEAR INTEGER Now suppose for a particular year, I have values for 11 months, but no value for the the left over month (let's call it September). Is it more correct to: Put a record in with a zero...

Most UML tools represent an empty UML class with empty fields for both, attributes and operations. But looking at the UML Infrastructure and Superstructure, there are a lot of empty classes shown as one single rectangle including the name of the class. But I cannot find a clear statement which...

I am trying to create a full JSON representation of Scan: Scan Id: 3 article: 3 user: 1 created_at: 2015-05-04 is_purchased: true Article id: 3 title: Lelles bread brand: Bear quantity: 5.243 entity: oz created_at: 2014-04-21 User id: 1 firstName: Frans lastName: Anderson userName: FRAN mail: [email protected] Is this JSON...

I apologize in advance because this question is almost a bit silly. Nonetheless, I can't come up with a good solution myself, so I thought it still worthwhile to ask. What does one do when the Representation object and the Domain object should have the same name? The DDD Sample...

i am learning IEEE-754 representation of numbers. I know how to convert from binary to IEEE and on vice versa. Now i am trying to figure out how to find out how many numbers in single precision are for instance between 2 and 3. So, the sign will be the...

(all numbers discussed are in decimal) lets say we have a floating point data type that is like : m * 10 ^ e where m is the mantissa . and max mantissa size is 1 ( 0 <= m <= 9); e is the exponent and its size is...