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negative lookahead

noun

Etymology

From negative + lookahead.

Definitions

  1. The analysis of the subsequent characters absence before the regular expression is…

    The analysis of the subsequent characters absence 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.

The neighborhood

Vish — recursive loop

No curated loop yet for negative lookahead. Loops are being traced one word at a time while the ingestion pipeline matures.

sense glosses and etymology drawn from English Wiktionary · source · CC-BY-SA