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tyrcho/free-spacing-regex.scala

Last active April 19, 2018 19:42
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Free Spacing Demo in Scala (add comments to your Regex)
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free-spacing-regex.scala
val re = """(?x)
# Match a 20th or 21st century date in yyyy-mm-dd format
# ?x is free-spacing flag to allow #comments, must be right at start of String
(19|20)\d\d # year (group 1)
[- /.] # separator
(0[1-9]|1[012]) # month (group 2)
[- /.] # separator
(0[1-9]|[12][0-9]|3[01]) # day (group 3)
""".r
"1990-02-20" match {
case re(y, m, d) => println(y, m, d)
}
// see https://www.regular-expressions.info/freespacing.html
// try it online @ https://scastie.scala-lang.org/cG09nykWSPG8tRfGhf5CHA
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