From Stackoverflow
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/^ [a-z0-9]+ # One or more repetition of given characters (?: # A non-capture group. - # A hyphen [a-z0-9]+ # One or more repetition of given characters )* # Zero or more repetition of previous group $/ |
or short
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/^[a-z0-9]+(?:-[a-z0-9]+)*$/ |
Go version
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var slugRegex = regexp.MustCompile(`^[a-z0-9]+(?:-[a-z0-9]+)*$`) |