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matchr.md

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matchr, match?, pmatch

Matches a string against a regular expression.

matchr s r will return an array of matching strings in s from regular expression r.

match? s r will return true if string s matches regular expression r. It returns false else.

pmatch s r will return false it it doesn't match, it will return the string matched else. If there is a capture group (parentheses) in the pattern, it will return its content instead of the whole match.

matchr "alpha", /bravo/
  # yields an empty array []

match? "alpha", /bravo/  # => false
match? "alpha", /alp/    # => true

The second argument to match? and matchr is turned into a regular expression.

match? "alpha", 'alp'    # => true

When there is a single argument, matchr and match? will try to take the string out of $(f.ret).

"blue moon"
match? (/blue/)
  # => true

"blue moon"
match? 'blue'
  # => true

/blue/
match? 'blue moon'
  # => true

'blue'
match? (/black/)
  # => false

# pmatch
pmatch 'string', /^str/                     # ==> 'str'
pmatch 'string', /^str(.+)$/                # ==> 'ing'
pmatch 'string', /^str(?:.+)$/              # ==> 'string'
pmatch 'strogonoff', /^str(?:.{0,3})(.*)$/  # ==> 'noff'
pmatch 'sutoringu', /^str/                  # ==> ''