Comments on: Blocks: Not Just Twisted Loops/Iterators, part 1

By: links for 2008-08-31 « Mike Does Tech

links for 2008-08-31 « Mike Does Tech — Sun, 31 Aug 2008 16:40:38 +0000

[...] metaclass » Blocks: Not Just Twisted Loops/Iterators, part 1 [...]

By: Thom Parkin

Thom Parkin — Tue, 26 Aug 2008 19:55:30 +0000

There is a third point that becomes apparent with these examples (and one that is most compelling for me):
The ruby code reads in a very ‘natural’ way.

Excellent examples. I have bookmarked this blog in anticipation of the remainder of the series!

By: Eric

Eric — Mon, 25 Aug 2008 14:28:51 +0000

Thanks; that’s a good point, Ed. In fact I could have condensed my version to a single line and avoided the intermediate variable, although it would have been a little longer and probably a little less clear.

I did want to use the same internal logic in both languages, though, so the differences would highlight blocks vs. alternative constructs in other languages.

By: Ed Spencer

Ed Spencer — Mon, 25 Aug 2008 10:10:34 +0000

There’s no reason why you can’t perform the ruby mapping example in one line also:

first_names = accounts.map {|account| account.holder.split(” “).first}

I’ve not used Java for a while but I would assume you can also drop a line at least from its example using split.