Hi, I'm trying to write a script that parses a file, which itself contains file names. I want to open each one of these files listed and perform some data analysis. However, I'm getting an error any way I try to do it.

Here is my original code (adapted)


open(INP, "<$file_list") or die("Error reading file");
while (<INP>) {
   my $data_file = m/(\w+)/;
   # I then call a subroutine which opens the $data_file
   # and performs some analysis on it
}

[download]

I wasn't surprised the above didn't work, since INP would have to be closed for the other file to be read in the subroutine I called. However, the following did not work also:


open(INP, "<$file_list") or die("Error reading file");
@lines = <INP>;
while (@lines) {
   my $data_file = m/(\w+)/;
   # I then call a subroutine which opens the $data_file
   # and performs some analysis on it
}

[download]

I then get an error on uninitialized values. I could slurp the entire file into a string, and then use split to get the lines, but that seems like it would be costly. Any ideas?

In reply to Multiple files opened by kokakola613

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