Regular Expressions
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. | Any character except newline | \c | Control character |
\d | Digit | \D | non Digit |
\s | Whitespace | \S | non Whitespace |
\w | Word character [A-Za-z0-9] | \W | non Word character |
^ | Start of string | $ | End of string |
* | 0 or more matches of previous expression | ||
+ | 1 or more matches of previous expression | ||
? | 0 or 1 matches (optional). Stop search
as soon as next expression is found (non greedy) |