Regular Expression Cheat Sheet
Regular expression common symbol, anchors, character classes, POSIX Character Classes, Assertions, Quantifiers, Ranges, Special Characters, String Replacement, Pattern Modifiers, Metacharacters must be escaped
Regular expression common symbol, anchors, character classes, POSIX Character Classes, Assertions, Quantifiers, Ranges, Special Characters, String Replacement, Pattern Modifiers, Metacharacters must be escaped