From: "Aaron D. Gifford" <astounding@...>
Date: 2011-04-07T03:49:42+09:00
Subject: Re: String#each_*slice* methods (like Enumerable#each_slice)

Quintus <sutniuq@gmx.net> replied:
> Use Enumarators:
> ================================
> irb(main):001:0> str = "ÄÄÄÖÖÖÜÜÜ"
> => "ÄÄÄÖÖÖÜÜÜ"
> irb(main):002:0> str.chars.each_slice(3){|x| p x}
> ["Ä", "Ä", "Ä"]
> ["Ö", "Ö", "Ö"]
> ["Ü", "Ü", "Ü"]
> => nil
> irb(main):003:0> str.bytes.each_slice(3){|x| p x}
> [195, 132, 195]
> [132, 195, 132]
> [195, 150, 195]
> [150, 195, 150]
> [195, 156, 195]
> [156, 195, 156]
> => nil
> irb(main):004:0>
> ================================
>
> Vale,
> Marvin

Yes, I agree, that can work.

As I said in my original post:
>> One alternative each_bslice implementation I tried used
>> str.bytes.to_a.map(&:chr).each_slice(x){|c| p c.join} but it was a bit
>> slower in benchmarks versus the str.scan method.

That implementation did use enumerators.  But it was slower than
str.scan.  Hence my asking if there was a better (faster/more
efficient) way.

I didn't try benchmarking str.chars.each_slice vs str.scan.  I'll have
to check that out.  Thanks for pointing that out to me!

Aaron out.