Re: References for ano subs fixed at compile time? (no)

Are the references to anonymous code blocks in Perl always constant, because they are fixed at compile time?

No and no; its just another variable. consider

$ perl -le " for(1..3){ my$f=$_; print\$f; }"
SCALAR(0x99b824)
SCALAR(0x99b824)
SCALAR(0x99b824)
[download]

versus

$ perl -le " sub ff { my $f = $_; return \$f } print ff() for 1..3;"
SCALAR(0x3f9bcc)
SCALAR(0x3f9bbc)
SCALAR(0x3f9bcc)
[download]

What perl does, how perl optimizes, how perl reuses allocated memory, depends on what the code does

Comment on Re: References for ano subs fixed at compile time? (no) Select or Download Code

Replies are listed 'Best First'.
Re^2: References for ano subs fixed at compile time? (no) by LanX (Saint) on Jun 18, 2013 at 21:38 UTC
I was talking about CODE-refs not SCALARs! Cheers Rolf ( addicted to the Perl Programming Language)	[reply]
Re^3: References for ano subs fixed at compile time? (no) by Anonymous Monk on Jun 20, 2013 at 01:32 UTC
I was talking about CODE-refs not SCALARs! Same difference, perl reuses references as it sees fit	[reply]