From: dblack@...
Date: 2006-11-08T11:27:15+09:00
Subject: Re: can you rubyfy this?

On Wed, 8 Nov 2006, David Vallner wrote:

> Jeff Pritchard wrote:
>>
>> Multi-line {} blocks are legal but not the "expected" way.  The rest of
>> it looks ok to me.
>>
>
> I claim subject to fashion / taste - I can't recall do/end being used
> much for blocks at all when I joined the list in the wild, wild days of
> 1.8.2 *duck*

Arriviste :-)

I got curious about this, so here are some very rough-and-ready stats.

First, Ruby 1.8.2.  $rfiles is all the .rb files in the standard lib.

# {|| } blocks
$ grep "{ \?|" $rfiles | wc -l
1729

# {|| } blocks on multiple lines
$ grep "{ \?|" $rfiles | grep -v "}" | wc -l
724

# do blocks
$ grep " do " $rfiles | wc -l
1130

# do blocks on multiple lines
$ grep " do " $rfiles | grep -v "end" | wc -l
1093

Here's the same for 1.8.5:

Braces: 1121
Braces on multiple lines: 379
do/end: 1275
do/end on multiple lines: 1237

Summary:

Block use in general is down.  Or my grepping is even cruder than it
looks :-)

do/end has gained some popularity, relative to all blocks (53% of all
blocks vs. 39%).

do/end is, and was, more common for multi-line blocks.


David

-- 
                   David A. Black | dblack@wobblini.net
Author of "Ruby for Rails"   [1] | Ruby/Rails training & consultancy [3]
DABlog (DAB's Weblog)        [2] | Co-director, Ruby Central, Inc.   [4]
[1] http://www.manning.com/black | [3] http://www.rubypowerandlight.com
[2] http://dablog.rubypal.com    | [4] http://www.rubycentral.org