Lazy and greedy quantifiers in regular expressions
Published on in Regular expressions
Last updated on
Greedy quantifiers (the default, e.g. *) match as much as possible.
Lazy quantifiers (e.g. *?) match as little as possible.
Regular expressions
3 ways to convert a path into cumulative segments in JavaScript
Published on in JavaScript and Regular expressions
Last updated on
How to convert
'/foo/bar/baz/'
into an array of
'/', '/foo/', '/foo/bar/', and '/foo/bar/baz/'.
Example use case: building breadcrumb navigations.
How to do overlapping matches with regular expressions
Published on in JavaScript and Regular expressions
Last updated on
E.g. how to capture overlapping pairs of letters from the string 'abcde',
i.e. 'ab', 'bc', 'cd' and 'de'.
Spoiler: with lookahead and lookbehind assertions.