Re^3: Locator to Lat/Long code: works, but is inelegant

I just got into the habit of sub declaration, because I remember warnings being generated if you didn't.

Its all about parens. If you use parens, no warnings. You use parens :)

$ perl -le " f(1); sub f{warn@_} "
1 at -e line 1.

$ perl -le " f 1 ; sub f{warn@_} "
Number found where operator expected at -e line 1, near "f 1"
        (Do you need to predeclare f?)
syntax error at -e line 1, near "f 1"
Execution of -e aborted due to compilation errors.

$ perl -le " sub f; f 1 ; sub f{warn@_} "
1 at -e line 1.
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Re^4: Locator to Lat/Long code: works, but is inelegant by ForgotPasswordAgain (Vicar) on Jul 03, 2011 at 22:35 UTC
Defining a sub also "declares" it: `$ perl -le "sub f{warn@_} f 1" 1 at -e line 1.` [download]	[reply] [d/l]
Re^5: Locator to Lat/Long code: works, but is inelegant by Anonymous Monk on Jul 03, 2011 at 23:05 UTC
Defining a sub also "declares" it Except when it declares it too-late for the parser to notice The OP uses parens, so the parser doesn't need a "forward" declaration or re-arranging of sourcecode	[reply]