Re: Is there a way to bulky feed?
On Fri, Jul 10, 2009 at 12:29 AM, yary not@gmail.com wrote: On Wed, Jul 8, 2009 at 8:45 PM, Xiao Yafeng xyf.x...@gmail.com wrote: Any thoughts? First let's fix the whitespace in your post so it's easier to read- My question is: could I write below code in perl6: # 2 loops like for @a - $b[0],$b[1] {;} my @a = 1 2 3 4; my @b[2]; for @a -@b {;} my @a = 1 2 3 4; my @b; for @a - @b{;}# 1 loop # 2 loops like grep {$^a+$^b 3} == @a; my @a = 1 2 3 4; my @b[2]; grep(@b){say 'yes' if +...@b3} == @a; # slurp my @a = 1 2 3 4; grep{say 'yes' if +...@_=10} == @a; One style point, generally a list of numbers is written as my @a = 1..4; # list of numbers, 1 2 3 4 is a list of strings my @a = '1'..'4' # equivalent to 1 2 3 4 As for your original question, I am not quite sure what you're asking. Do you want a simpler way to write for 一..四 {say $^x $^y;} 一 二 三 四 (... which assumes that unicode sequencing is working, I can't test that on my machine!) Or do you want something like- for yuht! yee sahm say - $a {for eee arr -$b {say $a $b}} Or using more memory and less looping (at least superficially!) for 'a'..'d' X A Z {say $^p $^q}; In other words, if you can write some code that runs and tell us how you'd like to simplify it, I might be able to answer better. What I thought is reducing loop times. In some case, we don't need pop a item from a list one by one. Acoording to memory capacity of machine, we can get more than one items from the list. for a simple example, for 1..100 - $x { func1($x) if $pid = fork; } above code will loop 100 times, fork 100 processes and waste most of memory on machine. if I can say, my @b[1]; for 1..100 - @b{ func2(@b) if $pid = fork; } IMHO, preceding code will be better in term of memory utilization.
Re: Is there a way to bulky feed?
I understand now. Given a large list, you'd like to assign chunks of the list to an array, easily, while looping. In other words, you're looking for a way to abbreviate this: my $chunk_size=10_000; my @big=''..'mnop'; for ^...@big :by $chunk_size { my @chu...@big[$_..($_+$chunk_size,@big.end).min] ... # Do stuff with @chunk } I'm a perl6 novice so there probably is a more elegant way to write the above already. From your original email, I like this idea- for ''..'mnop' - *...@chunk[10_000] { ... } # @chunk is 1 elems or less though I think the syntax has to change a bit. I used the *@ sigil because chunk is slurpy, but only up to 10,000 items. Wrong on a couple levels? By the way, you shouldn't predeclare @chunk as you did in the original example- my @a = 1 2 3 4; my @b[2]; for @a -@b {;} the @b in the pointy block is a new declaration that shadows the earlier my @b[2] declaration.
Is there a way to bulky feed?
My question is: could I write below code in perl6: my @a = 1 2 3 4; my @b[2]; for @a - @b {;} # 2 loops like for @a - $b[0],$b[1]{;} my @a = 1 2 3 4; my @b; for @a - @b {;} # 1 loop my @a = 1 2 3 4; my @b[2]; grep(@b){say 'yes' if +...@b3} == @a; # 2 loops like grep {$^a+$^b 3} == @a; my @a = 1 2 3 4; grep{say 'yes' if +...@_ =10} == @a; # slurp Since memory is cheaper and cheaper, bulky feed can maximize to make use of memory and reduce loops. Any thoughts?
Re: Is there a way to bulky feed?
On Wed, Jul 8, 2009 at 8:45 PM, Xiao Yafeng xyf.x...@gmail.com wrote: Any thoughts? First let's fix the whitespace in your post so it's easier to read- My question is: could I write below code in perl6: # 2 loops like for @a - $b[0],$b[1] {;} my @a = 1 2 3 4; my @b[2]; for @a -@b {;} my @a = 1 2 3 4; my @b; for @a - @b{;}# 1 loop # 2 loops like grep {$^a+$^b 3} == @a; my @a = 1 2 3 4; my @b[2]; grep(@b){say 'yes' if +...@b3} == @a; # slurp my @a = 1 2 3 4; grep{say 'yes' if +...@_=10} == @a; One style point, generally a list of numbers is written as my @a = 1..4; # list of numbers, 1 2 3 4 is a list of strings my @a = '1'..'4' # equivalent to 1 2 3 4 As for your original question, I am not quite sure what you're asking. Do you want a simpler way to write for 一..四 {say $^x $^y;} 一 二 三 四 (... which assumes that unicode sequencing is working, I can't test that on my machine!) Or do you want something like- for yuht! yee sahm say - $a {for eee arr -$b {say $a $b}} Or using more memory and less looping (at least superficially!) for 'a'..'d' X A Z {say $^p $^q}; In other words, if you can write some code that runs and tell us how you'd like to simplify it, I might be able to answer better.