Re: Are "use constant" constants really inlined?

Yes, B::Deparse shows that they are indeed inlined:

17:21 >perl -MO=Deparse -e "use constant { C => 42, D => 0 }; print C;
+ print 'Debug' if D;"
use constant ({'C', 42, 'D', 0});
print 42;
'???';
-e syntax OK

17:28 >
[download]

Hope that helps,

Athanasius <°(((>< contra mundum Iustus alius egestas vitae, eros Piratica,

Comment on Re: Are "use constant" constants really inlined? Download Code

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Re^2: Are "use constant" constants really inlined? by ikegami (Patriarch) on Jun 30, 2016 at 18:27 UTC
B::Concise is even more definitive since it shows very accurate information about the opcodes (whereas B::Deparse synthesizes a Perl code approximation). `$ perl -MO=Concise,-exec -e'use constant { C => 42 }; print C;' 1 <0> enter 2 <;> nextstate(main 187 -e:1) v:{ 3 <0> pushmark s 4 <$> const[IV 42] s*/FOLD 5 <@> print vK 6 <@> leave[1 ref] vKP/REFC -e syntax OK` [download] Compare to a sub call: `$ perl -MO=Concise,-exec -e'sub C { 42 } print C;' 1 <0> enter 2 <;> nextstate(main 3 -e:1) v:{ 3 <0> pushmark s 4 <0> pushmark s 5 <#> gv[IV \] s 6 <1> entersub lKS 7 <@> print vK 8 <@> leave[1 ref] vKP/REFC -e syntax OK` [download]	[reply] [d/l] [select]
Re^2: Are "use constant" constants really inlined? by Darkwing (Scribe) on Jun 30, 2016 at 07:47 UTC
Thanks, and B::Deparse is an interesting module; didn't know that.	[reply]