The i Modifier Case Insensitivity : modifier « Regular Expression « Perl






  1. Perl
  2. Regular Expression
  3. modifier

The i Modifier Case Insensitivity

    

Format: s/search pattern/replacement string/i;

# Matching with the i option
while(<DATA>){
    print if /norma/i;     # Turn off case sensitivity
}
__DATA__
    Steve
    Jack
    Tom
    Norma
    James
    Jason








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4.The m Operator and Matching
5.The m modifier controls the behavior of the $ and ^ anchor metacharacters.
6.The s Modifier-The Dot Metacharacter and the Newline
7.The s Operator and Substitution
8.The s operator supports a number of variables
9.The x Modifier: The Expressive Modifier
10.\B matches only if the pattern is contained in a word.
11.The \s metasymbol and whitespace
12.ei modifier
13.Use /gc to remember position
14.Use \G to match rest of text
15.The \S metasymbol and nonwhitespace
16.Matching Modifiers
17.Inline Modifiers