The 3 argument file open is "open HANDLE DIRECTION FILENAME". I wanted to have a "generic" open that supports both STDOUT as well as user-defined file names. I could not figure out a way to assign the pre-defined file handles STDOUT (& STDIN) to a filename that would work with the 3 argument file open.
here is the best that i could do :
my ($file,$wFH);
if ( @ARGV ) { $file = shift; }
else { $file = "STDOUT"; }
my $message = "this is a test\n";
if ( $file ne "STDOUT" ) {
open $wFH, ">", $file
or die;
} else {
$wFH = *STDOUT;
}
print $wFH $message;
i was hoping to eliminate the IF block for opening a file. since this allows me to write to either STDOUT or a file, i have "generic" write stmts but not a "generic" open.
is there a better way? thanks
Posts are HTML formatted. Put <p> </p> tags around your paragraphs. Put <code> </code> tags around your code and data!
Titles consisting of a single word are discouraged, and in most cases are disallowed outright.
Read Where should I post X? if you're not absolutely sure you're posting in the right place.
Please read these before you post! —
Posts may use any of the Perl Monks Approved HTML tags:
- a, abbr, b, big, blockquote, br, caption, center, col, colgroup, dd, del, details, div, dl, dt, em, font, h1, h2, h3, h4, h5, h6, hr, i, ins, li, ol, p, pre, readmore, small, span, spoiler, strike, strong, sub, summary, sup, table, tbody, td, tfoot, th, thead, tr, tt, u, ul, wbr
You may need to use entities for some characters, as follows. (Exception: Within code tags, you can put the characters literally.)
| |
For: |
|
Use: |
| & | | & |
| < | | < |
| > | | > |
| [ | | [ |
| ] | | ] |
Link using PerlMonks shortcuts! What shortcuts can I use for linking?
See Writeup Formatting Tips and other pages linked from there for more info.