Meaning of positive lookahead | Babel Free
Definitions
The analysis of the subsequent characters presence before the regular expression is matched (symbol: ?=).
Examples
“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⟳.”
CEFR level
B2
Upper Intermediate
This word is part of the CEFR B2 vocabulary — upper intermediate level.
This word is part of the CEFR B2 vocabulary — upper intermediate level.
See also
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