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Dear Monks,
I cannot explain the following behavior of glob in the script.
Given is a directory U:/TEMP/TEMP with three subdirectories /A, /B and /C.
Each directory contains a file:
U:/TEMP/TEMP/A/Test01.txt U:/TEMP/TEMP/C/Test03.txt U:/TEMP/TEMP/B/Test02.txt
If I write the script the following way:
#!/usr/bin/perl use strict; use warnings; my %address = ( A => qq{U:/TEMP/TEMP/A}, B => qq{U:/TEMP/TEMP/B}, C => qq{U:/TEMP/TEMP/C}, ); for my $t (keys %address) { print "$t : $address{$t} : ", glob ("$address{$t}/Test*"), "\n"; }
then it prints as shown:
A : U:/TEMP/TEMP/A : U:/TEMP/TEMP/A/Test01.txt C : U:/TEMP/TEMP/C : U:/TEMP/TEMP/C/Test03.txt B : U:/TEMP/TEMP/B : U:/TEMP/TEMP/B/Test02.txt
If I write it in the form:
#!/usr/bin/perl use strict; use warnings; my %address = ( A => qq{U:/TEMP/TEMP/A}, B => qq{U:/TEMP/TEMP/B}, C => qq{U:/TEMP/TEMP/C}, ); for my $t (keys %address) { my $file = glob ("$address{$t}/Test*"); print "$t : $address{$t} : $file, \n"; }
then the output is as follows:
A : U:/TEMP/TEMP/A : U:/TEMP/TEMP/A/Test01.txt, Use of uninitialized value $file in concatenation (.) or string at ... + line 15. C : U:/TEMP/TEMP/C : , B : U:/TEMP/TEMP/B : U:/TEMP/TEMP/B/Test02.txt,
Why it behaves itself different?
Thanks in advance.

In reply to glob behavior by vagabonding electron

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