lookbehind

noun

lookbehind

noun

Etymology Deverbal from look behind.

1

The analysis of the preceding characters before the regular expression is matched.

Regular expressions

  • [There] are times when it's useful to be able to look to the left of the current position being considered to see what the past had to say about a particular pattern. That is the purpose of lookbehinds.2004, Mehran Habibi, Java Regular Expressions: Taming the java.util.regex Engine:
Related terms
lookahead, lookaside
Hypernyms
lookaround
Hyponyms
negative lookbehind, positive lookbehind

Entry derived from the Wiktionary, under licence CC BY-SA 4.0 — list of authors.