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List:       ruby-core
Subject:    Re: Intelligent eyes needed
From:       Hugh Sasse Staff Elec Eng <hgs () dmu ! ac ! uk>
Date:       2004-02-28 21:26:31
Message-ID: Pine.GSO.4.53.0402282049130.12793 () brains
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On Sun, 29 Feb 2004, Dave Thomas wrote:

> I've come up with
> http://www.pragmaticprogrammer.com/extracts/blocks.pdf as my first pass
> at an explanation. If folks have time, I'd really appreciate comments,

"The block may start with an argument list between vertical
bars.[...]The start of the block must be on the same locial line as
the end of the invocation"
    - Add "though the argument list may appear on the next line"
      perhaps, so it is clear that "start of the block" does not
      encompass the arguments?

Typo:  "In an iterator conext, next returns"
                         ^^^^

Reading:
    "[...]that block acts like a regular block, and the rules above
    apply"
My "less intelligent eyes" threw up:
    'What is a "*regular* block"? Didn't you just give two
    rules, which were different?'
Perhaps beginning that sentence with:
"If you use Proc.new (as opposed to Kernel.proc or Kernel.lambda,
discussed next)"
would help.  Possibly too heavy for something intended to be terse?

I'm looking forward to buying this book: these block/proc subtleties
are handled so well. Sneaking in that callback example was a nice
touch.  Thank you.

        Hugh

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