Possible Duplicate:
Java \ Pattern - how to write a pattern that verifies the lack of a string?
How can I match all strings without the word "authorize" in them via regular expressions? I tried *(authorize){0}* to no avail.
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A:
/^(?!.*authorize).*/
This uses a negative lookahead to ensure that the overall pattern will match only if the expression "authorize" cannot match anywhere in the input.
Amber
2010-07-05 16:35:33
Is this perl-specific?
Heath Hunnicutt
2010-07-05 16:41:35
Most modern regex engines implement positive and negative lookahead assertions.
Amber
2010-07-05 17:58:30