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jrunning/fun_with_to_proc.rb

Last active August 29, 2015 14:07
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Fun with to_proc
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fun_with_to_proc.rb
class Regexp
def to_proc
proc {|str| match(str) && $~.to_s }
end
end
arr = [ "foo", "bar 123", "baz", "456", "789 qux" ]
p arr.find(&/bar/) # => "bar 123"
exp = /\d+/
p arr.select(&exp) # => [ "bar 123", "456", "789 qux" ]
p arr.map(&exp) # => [ nil, "123", nil, "456", "789" ]
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