Ruby grep with string argument

regex, ruby, ruby-1.9

Solution

Regular expressions support interpolation, just like strings:

var = "hello"
re = /#{var}/i
p re #=> /hello/i

Problem

I want to use grep with a string as regex pattern. How can i do that? Example: ``` myArray.grep(/asd/i) #Works perfectly. ``` But i want to prepare my statement first ``` searchString = '/asd/i' myArray.grep(searchString) # Fails ``` How can i achieve this? I need a string prepared because this is going into a search algorithm and query is going to change on every request. Thanks.

Original source