ruby eval('\1') of gsub possible?
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by Horace Ho
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Published on 2010-03-29T07:59:12Z
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2010/03/29
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I try to replace a sub-str by the content of a valiable where its name matches the sub-str by:
>> str = "Hello **name**"
=> "Hello **name**"
>> name = "John"
=> "John"
str.gsub(/\*\*(.*)\*\*/, eval('\1')) # => error!
the last line in the code above is a syntax error. and:
>> str.gsub(/\*\*(.*)\*\*/, '\1')
=> "Hello name"
>> str.gsub(/\*\*(.*)\*\*/, eval("name"))
=> "Hello John"
what I want is the result of:
str.gsub(/\*\*(.*)\*\*/, eval("name")) # => "Hello John"
any help will be appreciated. thx!
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