Variable substitution in a regex

[Scott Pack]

Hi,

I am new to Ruby. Can I substitute the value of a
variable into a regular expression? For example:

exp = /(\d+)/ #works
exp = /(\d+)/ + 'some string value' #Not!

Thanks,

S




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[James Edward Gray II]

Hi,

I am new to Ruby. Can I substitute the value of a
variable into a regular expression? For example:

exp = /(\d+)/ #works
exp = /(\d+)/ + 'some string value' #Not!

Yes, the same way you interpolate in strings:

exp = /(\d+)#{'some string value'}/

Hope that helps.

James Edward Gray II

 

[Nikolai Weibull]

I am new to Ruby. Can I substitute the value of a
variable into a regular expression? For example:

exp = /(\d+)/ #works
exp = /(\d+)/ + 'some string value' #Not!

exp = /(\d+)#{variable}/

but I don’t understand if that’s what you want. Your example doesn’t
agree with your question,
nikolai