When looking for day, Sunday should not be matched.

Parses date-time duration strings +-1y2M3d4h5m6s, where 'm' is the dafault. Like this, where {} contains list of capturing groups: 21 - parsed as {,,,,21,} 2y2s - parsed as {2,,,,,2}

should start with letter follow by letters and numbers and (-) - zero or more can't start or finish with (-) can't have two or more consecutive (-) char

This version matches any sentence that sounds like yelling even it doesnt end with ? or !

Bob answers 'Whoa, chill out!' if you yell at him. You can use this regex to match regexes like "WHAT THE HELL WERE YOU THINKING?"

Match a not-empty string. A string with only spaces or no characters is an empty-string. When match something, mathc all the string with the exception of the eventually space at the and

Validador de CPF