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Regular expressions

Representation

Documentation

Love them or hate them but regular expressions are a huge part of any programming language. In Elixir, regex is based on Perl Compatible Regular Expressions. You can create a regular expression with the following sigil:

~r{regexp}opts
  • regexp - regular expression

  • opts - regular expression options

Options

List of available regexp options:

  • unicode (u) - enables Unicode specific patterns like \p and change modifiers like \w, \W, \s and friends to also match on Unicode. It expects valid Unicode strings to be given on match

  • caseless (i) - adds case insensitivity

  • dotall (s) - causes dot to match newlines and also set newline to anycrlf; the new line setting can be overridden by setting (*CR) or (*LF) or (*CRLF) or (*ANY) according to re documentation

  • multiline (m) - causes ^ and $ to mark the beginning and end of each line; use \A and \z to match the end or beginning of the string

  • extended (x) - whitespace characters are ignored except when escaped and allow # to delimit comments

  • firstline (f) - forces the unanchored pattern to match before or at the first newline, though the matched text may continue over the newline

  • ungreedy (U) - inverts the “greediness” of the regexp (the previous r option is deprecated in favor of U)

We've stopped offering our services, but you can check our last product which is still in active development.

humadroid.io is an employee and performance management software. It's an unique tool allowing everyone to be in the loop - by having up to date info about co-workers, time-off, benefits, assets, helping with one-on-ones, being a go-to place for company-wide announcements.

Check out humadroid.io
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