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Re^2: Speed of Split

by Lexicon (Chaplain)
on Nov 18, 2004 at 09:53 UTC ( #408730=note: print w/ replies, xml ) Need Help??


in reply to Re: Speed of Split
in thread Speed of Split

Odds are I'll go another route, but out of curiosity, does this speedup hold when assigning to something like @NAMESPACE::data?


Comment on Re^2: Speed of Split
Re^3: Speed of Split
by ysth (Canon) on Nov 18, 2004 at 10:09 UTC
    Yes, it does.
    $ perl -MO=Concise,-exec -e'@NAMESPACE::data = split / /, $x' 1 <0> enter 2 <;> nextstate(main 1 -e:1) v 3 </> pushre(/" "/ => @data) s/64 4 <#> gvsv[*x] s 5 <$> const[IV 0] s 6 <@> split[t4] vK 7 <@> leave[1 ref] vKP/REFC -e syntax OK $ perl -MO=Concise,-exec -e'@data = split / /, $x' 1 <0> enter 2 <;> nextstate(main 1 -e:1) v 3 </> pushre(/" "/ => @data) s/64 4 <#> gvsv[*x] s 5 <$> const[IV 0] s 6 <@> split[t4] vK 7 <@> leave[1 ref] vKP/REFC -e syntax OK $ perl -MO=Concise,-exec -e'my @data; @data = split / /, $x' 1 <0> enter 2 <;> nextstate(main 1 -e:1) v 3 <0> padav[@data:1,2] vM/LVINTRO 4 <;> nextstate(main 2 -e:1) v 5 <0> pushmark s 6 </> pushre(/" "/) s/64 7 <#> gvsv[*x] s 8 <$> const[IV 0] s 9 <@> split[t3] lK a <0> pushmark s b <0> padav[@data:1,2] lRM* c <2> aassign[t4] vKS d <@> leave[1 ref] vKP/REFC -e syntax OK

    See above that the array assignment is completely bypassed; instead the array is attached in a funny kind of way to the regex which is then passed to split, and split places the results directly into the array instead of returning them.

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