我有一个像这样的哈希:
'IRQ_VSAFE_LPM_ASC_0' => '140','IRQ_VSAFE_LPM_ASC_1' => '141'.......and so on
我想在散列中的所有键中用ASC_1替换ASC_.我试过这个:
foreach $_(keys $hash) { s/ASC_/ASC_1/g; }
但它不起作用.
解决方法
您必须从哈希中删除旧密钥并插入新密钥,
use strict; use warnings; sub rename_keys { my ($hash,$func) = @_; my @k1 = my @k2 = keys %$hash; $func->() for @k2; @$hash{@k2} = delete @$hash{@k1}; } my %hash = ( 'IRQ_VSAFE_LPM_ASC_0' => '140','IRQ_VSAFE_LPM_ASC_1' => '141',); rename_keys(\%hash,sub { s/ASC_/ASC_1/ });