Re^9: Write code diferently (A little knowledge is a dangerous thing.)

I am sorry that I made an error

Thank you, and respect.

Here are 3 runs each of 5.10.1 (my default installation) and 5.18.0 (self-compiled with MSVC VS v9.0) both running under Vista + SP1 on my hardware:

C:\test>IdiotsBench.pl
                    Rate idiomatic-my-sub map-my-scope-sub
idiomatic-my-sub 10817/s               --              -7%
map-my-scope-sub 11597/s               7%               --

C:\test>IdiotsBench.pl
                    Rate idiomatic-my-sub map-my-scope-sub
idiomatic-my-sub 11113/s               --              -8%
map-my-scope-sub 12126/s               9%               --

C:\test>IdiotsBench.pl
                    Rate idiomatic-my-sub map-my-scope-sub
idiomatic-my-sub 10760/s               --             -11%
map-my-scope-sub 12126/s              13%               --

C:\test>\perl5.18\bin\perl.exe IdiotsBench.pl
                    Rate map-my-scope-sub idiomatic-my-sub
map-my-scope-sub 10426/s               --              -9%
idiomatic-my-sub 11438/s              10%               --

C:\test>\perl5.18\bin\perl.exe IdiotsBench.pl
                    Rate map-my-scope-sub idiomatic-my-sub
map-my-scope-sub 10455/s               --              -7%
idiomatic-my-sub 11269/s               8%               --

C:\test>\perl5.18\bin\perl.exe IdiotsBench.pl
                    Rate map-my-scope-sub idiomatic-my-sub
map-my-scope-sub 10521/s               --              -7%
idiomatic-my-sub 11263/s               7%               --
[download]

So yes, the balance of power has shifted slightly.

my initial point has never been about performance anyway, but only to suggest a possible explanation for the OP's original question.

Which I understood to be so. But, there is no logical reason for denigrating the use of map in a void context.

Your argument for clarity -- an argument that is very close to my heart -- is false also; because it relies upon the assumption, or presumption, that map *must* return a list; rather than just 'applies a function to a list'.

You are (relatively) new around here; and I urge you to read and digest the writings of Abigail/Abigail-II, there is little that s/he said on the subject of Perl that isn't worthy if serious note.

With the rise and rise of 'Social' network sites: 'Computers are making people easier to use everyday'

Examine what is said, not who speaks -- Silence betokens consent -- Love the truth but pardon error.

"Science is about questioning the status quo. Questioning authority".

In the absence of evidence, opinion is indistinguishable from prejudice.

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