我在一个目录中有两个目录是文件HG111_1_001.txt,在另一个目录中是HG111_2_001.txt。这两个文件需要通过一组命令(sub single和sub double)处理,然后作为一对返回到sub playnice。我遇到的问题如下:
代码返回以下不明确的警告: 在C:\ Users \ prl \ tools.pl第52行的字符串中使用未初始化的值$ file2。 这将是最终的印刷品。
启用Carp时,此错误表示: main :: playnice(HG111_2_001.txt在第37行和第37行调用) main :: playnice(第21行调用HG111_1_001.txt
这些是与我将值传递给子时相对应的行。
#!/usr/bin/perl -w
use strict;
use warnings;
my $dirname = 'C:\Users\prl';
my $dirname2 = 'C:\Users\prl\1';
my $file1;
my $file2;
#Read Directory and find first file
opendir( D, $dirname2 ) or die "can't opendir $dirname: $!";
while ( $file2 = readdir(D) ) {
next unless $file2 =~ m/^HG111_1_0/;
my $path2 = "$dirname2\\$file2";
single( $file2, $path2 );
playnice($file2);
}
#Pass to first sub
sub single {
my $file2 = shift;
my $path2 = shift;
print "$path2\n";
print "$file2\n";
}
opendir( DIR, $dirname ) or die "can't opendir $dirname: $!";
while ( $file1 = readdir(DIR) ) {
next unless $file1 =~ m/^HG111_2_0/;
my $path2 = "$dirname\\$file1";
double( $file1, $path2 );
playnice($file1);
}
sub double {
my $file1 = shift;
my $path1 = shift;
print "$path1\n";
print "$file1\n";
}
sub playnice {
my $file1 = shift;
my $file2 = shift;
print "$file1", "$file2", "\n", 'orked?';
}
答案 0 :(得分:1)
你只将一个参数传递给你的playnice函数......
见这个简单的例子:
sub playnice {
my ($f1,$f2) = @_;
print "$f1 $f2\n";
}
# your program: wrong, $f2 is undef
playnice('foo'); # one argument
# what it should do
playnice('foo','bar') # two argument
现在您必须编辑代码并使用两个参数调用playnice函数。
你也应该: