From: Leo Razoumov <see_signature@127.0.0.1>
Date: 2001-03-16T14:40:03+09:00
Subject: [ruby-talk:12711] Re: Order, chaos, and change requests :)

>>>>> "YM" == Yukihiro Matsumoto <matz@zetabits.com> writes:
    YM> Hi,
    YM> In message "[ruby-talk:12615] Re: Order, chaos, and change requests :)"
    YM>     on 01/03/14, Leo Razoumov <see_signature@127.0.0.1> writes:

    YM> |n  = 0
    YM> |my = 1
    YM> |(1..100).each \
    YM> |{
    YM> |  <my,local,vars,declared,here>
    YM> |  |n|
    YM> |  my += n
    YM> |  # ....
    YM> |}
    YM> |n  # -> 10  #side effect, 'n' was overriden within the block
    YM> |my # -> 1   #still old value, not affected by block-local var. of the same name

    YM> I like this except that I feel name duplication like the following is
    YM> little bit messy.

    YM>   array.each {<i>|i|...}

    YM> 							matz.

I think this is not a duplication of names because the semantics and
meaning of two constructs are different.
For example,

n = 0
i = 0

array.each { <i> |n| ...} # 'n' is being overridden by 'yield' (called by each)
                          # while 'i' is shadowed. 

array.each { <i> |i| ...} # 'i' is shadowed so that even "yield" does not affect it. 


-- Leo [ slonika AT yahoo DOT com ]