我有一个运行一个Perl代码的问题。它给我这个消息: “无法调用方法”说'没有包或对象引用'不能调用方法'说'
事情是,我找到了这个代码,我想用它来检查我的结果序列对齐。但它不会运行。
use strict;
use warnings;
use List::Util 'min';
use Memoize;
chomp(my $str1 = <"atattga">);
chomp(my $str2 = <"gagassa">);
my ($distance, $aligned1, $aligned2) = align($str1, $str2);
say $distance;
say $aligned1;
say $aligned2;
sub align {
my ($str1, $str2) = @_;
return (length($str2), ('-' x length($str2)), $str2) if !length($str1);
return (length($str1), $str1, ('-' x length($str1))) if !length($str2);
my @delete = align(substr($str1, 1), $str2);
$delete[0]++;
$delete[1] = substr($str1, 0, 1) . $delete[1];
$delete[2] = '-' . $delete[2];
my @insert = align($str1, substr($str2, 1));
$insert[0]++;
$insert[1] = '-' . $insert[1];
$insert[2] = substr($str2, 0, 1) . $insert[2];
my @substitute = align(substr($str1, 1), substr($str2, 1));
$substitute[0]++ if substr($str1, 0, 1) ne substr($str2, 0, 1);
$substitute[1] = substr($str1, 0, 1) . $substitute[1];
$substitute[2] = substr($str2, 0, 1) . $substitute[2];
if ($delete[0] <= $insert[0] && $delete[0] <= $substitute[0]) {
return @delete;
}
elsif ($insert[0] <= $delete[0] && $insert[0] <= $substitute[0]) {
return @insert;
}
else {
return @substitute;
}
}
BEGIN { memoize('align') };
你也可以'使用功能qw(说);'也是。 – squiguy