What is the class \p{Alnum} in the regex of the Ruby language? What characters does it contain, and how does it differ from [:alnum:]?
What is the class \p{Alnum} in the regex of the Ruby language? What characters
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What is the class \p{Alnum} in the regex of the Ruby language? What characters does it contain, and how does it differ from [:alnum:]?
Based on the rdoc and this tutorial, the two expressions are equivalent.
They contain alphabetic and numeric characters. If only using ASCII characters, it is equivalent to
[a-zA-Z0-9]. If there are non-ASCII characters, both[:alnum:]andp{Alnum}would also include things like accented characters.