珀尔 |替换运算符

Perl 中的替换运算符或“s”运算符用于将字符串的文本替换为用户指定的某种模式。

Syntax: s/text/pattern

Returns: 0 on failure and number of substitutions on success

示例 1：

#!/usr/bin/perl -w
  
# String in which text 
# is to be replaced
$string = "GeeksforGeeks";
  
# Use of s operator to replace
# text with pattern
$string =~ s/for/to/;
  
# Printing the updated string
print "$string\n";

输出：

GeekstoGeeks

示例 2：

#!/usr/bin/perl -w
  
# String in which text 
# is to be replaced
$string = "Hello all!!! Welcome here";
  
# Use of s operator to replace
# text with pattern
$string =~ s/here/to Geeks/;
  
# Printing the updated string
print "$string\n";

输出：

Hello all!!! Welcome to Geeks