What does script[/[^\d]+/, 0] do in Ruby?

Question

Specifically: script = script[/[^\\d]+/, 0] if script

My guess is it's some sort of substring function, but it's hard to find documentation on the Googles about it.

Answer 1

It replaces string with the first sequence of non-digit characters in script if it is a string. It is a badly written code, and can be better written as

script &&= script[/\D+/]

Answer 2

The brackets are equivalent to ruby's match. The stuff within "/ /" is a regular expression.

The ^ means not. The \\d is for digits The + is for 1 or more

You would have to learn more about regular expressions, but i believe that it is saying replace the value of script (if it exists) with just the characters that arent digits.

Play around with http://rubular.com/ to get a better feel for it.