Word.ws English Dictionary

positive lookaheads

positive lookaheads is the plural of positive lookahead.

Meaning of positive lookahead

Noun

positive lookahead (countable and uncountable, plural positive lookaheads)

  1. (regular expressions) The analysis of the subsequent characters presence before the regular expression is matched (symbol: ?=).
    • Negative lookahead works just like positive lookahead, except that whereas positive lookahead matches when the regex inside the lookahead matches, negative lookahead matches when the regex inside the lookahead failed to match.2012 August, Jan Goyvaerts, Steven Levithan, Regular Expressions Cookbook

Questions about positive lookaheads

What is positive lookaheads the plural of?
Positive lookaheads is the plural of positive lookahead.

Words near positive lookaheads in the dictionary

  1. positive laws
  2. positive linear functional
  3. positive linear functionals
  4. positive logic
  5. positive lookahead
  6. positive lookaheads
  7. positive lookaround
  8. positive lookbehind
  9. positive material identification
  10. positive measure
  11. positive measures

Source and license

Adapted from Wiktionary: positive lookaheads (page history and authors); positive lookahead (page history and authors). Text available under the Creative Commons Attribution-ShareAlike 4.0 license. Word.ws reformatted the entry and added links. Wiktionary data of 2026-09-02.

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