Use of Uninitialized References

2001-07-16 Thread Eric Chun
I've just seen a strange thing. I made up a simple perl program: #!/usr/local/perl -w my ($summary_data); $summary_data->{'express'} = "blahblahblah\n"; print $summary_data->{'express'}; Notice that $summary_data is not initialized, so when used as a reference, it

$pid = open(CMD, "-|")

2001-07-13 Thread Eric Chun
What does $pid = open(CMD, "-|") mean? I assume this is forking a process, but I have not seen "-|" before. Has anybody come across this kind of perl command before? -- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]