"The placement of a sub is important only when you call it without parentheses, ..."

I disagree with the inclusion of the word only in that statement. Here's a situation where placement is important when parentheses are used: 

$ perl -wE '
    sub meaning () { 42 }
    say meaning();
'
42

[download]
$ perl -wE '
    say meaning();
    sub meaning () { 42 }
'
main::meaning() called too early to check prototype at -e line 2.
42

[download]

You can, of course, predeclare and leave the definition for later: 

$ perl -wE '
    sub meaning ();
    say meaning();
    # ... later in code with other subroutine defintions
    sub meaning () { 42 }
'
42

[download]

— Ken

In reply to Re^3: why avoid & on function call by kcott
in thread why avoid & on function call by fireblood

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