如何在替换中使用变量作为修饰符 [英] How to use a variable as modifier in a substitution

问题描述

有没有办法在替换中使用变量作为修饰符?

Is there a way to use a variable as modifier in a substitution?

my $search = 'looking';
my $replace = '"find: $1 ="';
my $modifier = 'ee';

s/$search/$replace/$modifier;

我需要使用哈希数组来使用不同的修饰符进行批量搜索替换.

I need to use an array of hashes to make bulk search-replace with different modifiers.

推荐答案

嗯，如果必须这样做，我会这样做:

Hm, if I had to do it I would do like this:

use warnings;
use strict;
my @stuff = (
{
    search => "this",
    replace => "that",
    modifier => "g",
},
{
    search => "ono",
    replace => "wendy",
    modifier => "i",
}
);
$_ = "this ono boo this\n";
for my $h (@stuff) {
    if ($h->{modifier} eq 'g') {
        s/$h->{search}/$h->{replace}/g;
    } elsif ($h->{modifier} eq 'i') {
        s/$h->{search}/$h->{replace}/i;
    }
    # etc.
}
print;

您可能只想使用许多不同的修饰符，所以我认为这很容易.

There are only so many different modifiers you might want to use so I think this is easy enough.

您可以使用eval来完成此操作，但是它非常混乱.

You can use eval for this, but it's awfully messy.

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