本文介绍了perl中m/PATTERN/和/PATTERN/之间的差异的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！
问题描述
Perl中以下代码段之间是否有技术上的区别?它们的行为似乎相同
Is there any technical difference between the following code segments in perl? They seem to behave identical
my $str = "A cat is red";
if($str =~ /cat/) {
print "Matches\n";
}
vs
my $str = "A cat is red";
if($str =~ m/cat/) {
print "Matches\n";
}
此代码中的区别是第3行上的"m".为什么有人省略或不省略"m"?
The difference in this code is the "m" on line 3. Why would someone omit or not omit the "m"?
推荐答案
请参见 RegExp类似报价的操作符文档:它们是相同的. m版本"允许您使用其他字符代替/作为分隔符.但除此之外，没有区别.
See the RegExp Quote-Like Operators documentation: they're identical. The m "version" allows you to use other characters instead of / as a separator. But apart from that, no difference.
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