Contents
输出结果
a_b_c
程式码
JavaScript
let str = "A-B-C"; console.log(str.replace(/-/g, "_").toLowerCase());
PHP
<?php $str = "A-B-C"; echo strtolower(preg_replace("/-/", "_", $str))."\n";
Perl
my $str="A-B-C"; $str=~ s!-!_!gs; print lc($str)."\n";
Python
str = "A-B-C" print(str.replace("-", "_").lower())
Ruby
str = "A-B-C" print(str.gsub("-", "_").downcase+"\n")