Perl |替换运算符
原文:https://www.geeksforgeeks.org/perl-substitution-operator/
Perl中的替换运算符或' s '运算符用于用用户指定的某种模式替换字符串的文本。
语法: s/text/pattern
返回:失败时 0，成功时替换次数
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
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
