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Line 1,388: =={{header\|langur}}== ~~Langur uses semi-integreted regex.~~ The following examples use re2 regex literals. There are several functions that can be used with regexes, such as match(), replace(), split(), etc. They can also be matched in a ~~given~~switch expression test. To match a string, ... Line 1,396: Or... ~~{{works with\|langur\|0.10}}~~ <syntaxhighlight lang="langur">if val .x, .y = submatch(re/(abc+).+?(def)/, "somestring") { ... }</syntaxhighlight> ~~Prior to 0.10, multi-variable declaration/assignment would use parentheses around variable names and values.~~ ~~<syntaxhighlight lang="langur">if val (.x, .y) = submatch(re/(abc+).+?(def)/, "somestring") { ... }</syntaxhighlight>~~ Or... <syntaxhighlight lang="langur">~~given~~switch "somestring" { case re/abc/: ... ... Line 1,409 ⟶ 1,405: Or... <syntaxhighlight lang="langur">~~given~~switch re/abc/ { case "somestring": ... ...

Regular expressions (view source)