From: Jim Weirich <jim@...>
Date: 2005-05-13T00:24:54+09:00
Subject: Re: {} vs begin/end [was Re: object loops and what they return]


David A. Black said:
> I know, it's not 100% reliable... but it suggests that, at least
> roughly, 3% of 'do' blocks end on the same line, while 62% of {}
> blocks end on the same line.  So this "odd" behavior is actually
> pretty canonical :-)

Hmmm ... More statistics, same code base, same disclaimers.

dev05$ find . -name '*.rb' | xargs egrep '(each|loop) *do' | wc -l
    1112
dev05$ find . -name '*.rb' | xargs egrep '(each|loop) *{' | wc -l
     878
dev05$ find . -name '*.rb' | xargs egrep
'(collect|map|find|find_all|select|((inject|grep) *\(.*\))) *do' | wc -l
      68
dev05$ find . -name '*.rb' | xargs egrep
'(collect|map|find|find_all|select|((inject|grep) *\(.*\))) *{' | wc -l
     657

So, nearly 55% of methods that ignore the return value of the block use
do/end.

Over 90% of the methods that use the block's value use {}.

So you can use either style and claim to be main-stream.

-- 
-- Jim Weirich     jim@weirichhouse.org    http://onestepback.org
-----------------------------------------------------------------
"Beware of bugs in the above code; I have only proved it correct,
not tried it." -- Donald Knuth (in a memo to Peter van Emde Boas)