regexMatch
Returns true if the input string contains any match of the regular expression.
regexMatch "^[A-Za-z0-9._%+-]+@[A-Za-z0-9.-]+\\.[A-Za-z]{2,}$" "test@acme.com"
The above produces true
regexMatch
panics if there is a problem and mustRegexMatch
returns an error to the
template engine if there is a problem.