Matching Any Letter or Number : Digit « Regular Expression « Perl






  1. Perl
  2. Regular Expression
  3. Digit

Matching Any Letter or Number

    

range [a-z] matches any lowercase letter
range [A-Z] matches any uppercase letter
/[A-Z][A-Z]/ matches any two uppercase letters. 
To match any uppercase letter, lowercase letter, or digit, use the following range: /[0-9a-zA-Z]/








Related examples in the same category

1.Determine if a string has a digit.
2.Check for no digit
3.Check for digit
4.if ($text =~ /(\d+)/) {print "Here's the number of apples: $1.\n";}
5.if ($text =~ /\D/) {print "It's not a number.";}
6.if ($text =~ /^[+-]\d+\.\d*$/) {print "It's a number.";}
7.if ($text =~ /^\d+$/) {print "It's a number.";}
8.A simple integer-validation program.
9.Get all numbers
10.Match the one or more alphanumerics.
11.Match numbers
12.Match one or zero alphanumerics followed by a single space character