undef file handle : file handle « File « Perl






  1. Perl
  2. File
  3. file handle

undef file handle

    

use IO::File;
$filehandle = new IO::File;

if ($filehandle->open("<hello.txt")) {

    print <$filehandle>;

    undef $filehandle;
}








Related examples in the same category

1.Using file handle variable
2.Select a file handle
3.Pass file handle reference in a the form of '*FILEHANDLE{IO}'
4.Pass file handle reference to a subroutine
5.Pass file handle to stat function
6.Passing Filehandles by Reference
7.Passing file handles to functions
8.Filehandle References
9.Split a file handle containing array
10.defined lines in a file
11.Using a scalar variable to store a file variable name.
12.Using while loop to read content
13.Redirects the standard output and standard error files.
14.To write to a file:
15.Passing file name to functions