ruby,regex , Ruby - at least one item in array ALSO in line


Ruby - at least one item in array ALSO in line

Question:

Tag: ruby,regex

Given this array:

["/Item A/", "/Item B/"]

and a line:

Here's a line of text that includes /Item B/

what's a good, idiomatic, Ruby way of checking if the line includes at least one phrase from the array?


Answer:

Couple of ways. Speed may depend on the size of your array and line. Might want to run some benchmarks to see:

> a = ["/Item A/", "/Item B/"]
> l = "Here's a line of text that includes /Item B/"

Then using any?:

> a.any?{|e| l.index(e)}
=> true

Or using a Regexp:

> l =~ Regexp.union(a)
=> 36

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