From: Robert Klemme <bob.news@...>
Date: 2005-01-21T02:31:00+09:00
Subject: Re: Confused about variable "declarations"


"Mark Hubbart" <discordantus@gmail.com> schrieb im Newsbeitrag
news:de63abca050120090877cc9971@mail.gmail.com...
> On Thu, 20 Jan 2005 21:01:01 +0900, Graham Nicholls
> <graham@rockcons.co.uk> wrote:
> > No worries, and thanks, but I think that the problem was that offset
is
> > being set inside an iterator (they still confuse me - any pointers to
a
> > good explanation would be nice!), which means that it is out of scope
> > outside the iterator.
>
> A short explanation: Blocks have a sort of "leaky scope", where
> variables from outside the scope can leak in and out, but those that
> are from the inside don't leak out. for example:

While I completely agree with your explanation the word "leaky" strikes me
as odd as it seems to suggest  uncommon or defective behavior: it's very
common in programming languages, that variables are visible in nested
scopes but not surrounding scopes:

public int foo() {
  int visible_in_whole_method = 0;

  {
    int visible_only_in_this_nested_scope = visible_in_whole_method + 1;
  }
}

Kind regards

    robert