Ruby - Interpolate text quickly in regex

Question

We know this:

p '%s' % "test"
#=> "test"

But is it possible to do this:

s = "string"
s[/#{%s}/] % "test"

Michael Kohl · Accepted Answer · 2012-09-07 17:47:44Z

2

Well, you could always just do this:

s[Regexp.new("%s" % "test")]

If your string can contain characters with special meaning, use Regexp.escape beforehand. Also, you can directly interpolate into a regular expression:

s = "test"
/#{s}/ #=> /test/

answered Sep 7, 2012 at 17:47

Michael Kohl

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