A negative look ahead : Anchors « Regular Expression « Perl






  1. Perl
  2. Regular Expression
  3. Anchors

A negative look ahead

    

while(<DATA>){
   print if/^\w+\s(?![BC])/;
}
__DATA__
    ABC
    CBC








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6.A negative look behind
7.A positive look ahead
8.A positive look behind
9.Anchoring Metacharacters
10.Beginning of line anchor
11.Clustering and anchors
12.Beginning and end of word anchors
13.Get begin of the line
14.Searching from the beginning and the end
15.Shouldn't start a sentence with a period
16.Word-Boundary Pattern Anchors