Re^4: Missing $ on loop variable at measurements2.pl line 69.

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Re^5: Missing $ on loop variable at measurements2.pl line 69. by Nevtlathiel (Friar) on Sep 08, 2006 at 13:40 UTC
`my $number; #at the moment it's uninitialized - it exists, but it +doesn't have a value $number++; #this will print an uninitialized variable warning $number = 6; #now we're getting somewhere! $number++; #this is fine :)` [download] ---------- "Write a wise saying and your name will live forever." - Anonymous	[reply] [d/l]
Re^6: Missing $ on loop variable at measurements2.pl line 69. by ikegami (Patriarch) on Sep 08, 2006 at 16:43 UTC
Actaully, `$var++;` doesn't give uninitialized warnings. `$var = $var + 1;` would.	[reply] [d/l] [select]
Re^5: Missing $ on loop variable at measurements2.pl line 69. by davorg (Chancellor) on Sep 08, 2006 at 13:41 UTC
You give a variable a value by using the '=' operator. So the steps you need to go through are: Identify which variables are being used before they have been given a value Decide which value it would be appropriate to give them (often zero or the empty string) Use the assignment operator to assign the relevant operator to the correct variable I hope that makes sense. I don't think I can break it down any more without just writing the code for you - and I hope you wouldn't want that. -- <http://dave.org.uk> "The first rule of Perl club is you do not talk about Perl club." -- Chip Salzenberg	[reply]