Stripping non alphanumeric characters

ruby-talk
1

I know this is a noob question. What would be the best / most efficient
way to replace all non alphanumeric characters in a string?

Thanks for your help.

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2

Ben Johnson wrote:

I know this is a noob question. What would be the best / most efficient
way to replace all non alphanumeric characters in a string?

Thanks for your help.

you didn't say what you want to replace them *with*. Here I assumed you want to remove them. But you could use anything instead of just '' in the 2nd argument to gsub.

ruby$ irb
irb(main):001:0> x = "ab*&12%^cd"
=> "ab*&12%^cd"
irb(main):002:0> x.gsub(/[^[:alnum:]]/, '')
=> "ab12cd"

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3

You're the man, thanks.

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