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Hash of FileNames and FileHandlers
Posted by carlos (carlos), 19 April 2005
Hello,First of all Thanks for your answers.
I am very new programming in Perl, so I have beginners problems.
Ok, my problem:
I read from one file some file names, after I would like to open them assigning dynamically theirs fileHandlers in a one hash, and then to access the file using the name as a key of the hash.
I tried, but couldn't do.
#This code does not work. It is only an idea what I want to do.
#But I have not be able to do it
open fh, "<FileList.txt" or die "Couldn't open file: FileList.txt $!";
@Files = split (/\n/,<fh>);
%FilesHash = ();
#e.g
#%FilesHash = ( File1 => fh1, File2 => fh2);
foreach $file (@File)
{
open <fh> "+>$file";
$FilesHash{$file} = fh;
}
$Xfile = "File01.txt"
if( exists($FilesHash{$Xfile}) )
{
#print <fh> "String to copy\n";
print $FilesHash{$Xfile} "String to copy\n";
}
thanks in advance,
Carlos
Posted by admin (Graham Ellis), 19 April 2005
You can only store scalars in a hash .... and a file handle, unusually, is not a scalar. You'll have to use a typeglob.There's an example of using Typeglobs to handle a whole lot of file handles at the same time at http://www.wellho.net/resources/ex.php4?item=p301/splitter
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