From: "S.Volkov" <svolkov@...>
Date: 2007-05-19T17:30:10+09:00
Subject: Re: Why not adopt "Python Style" indentation for Ruby?

"Yukihiro Matsumoto" <matz@ruby-lang.org> wrote in message 
news:1179512451.328481.6736.nullmailer@x31.netlab.jp...
> Hi,
>
> In message "Re: Why not adopt "Python Style" indentation for Ruby?"
>    on Sat, 19 May 2007 03:15:17 +0900, "S.Volkov" <svolkov@comcast.net> 
> writes:
>
> |imho: we need special terminator anyway, now it is 'end', could be 
> another;
> |suggestion: introduce ';;' terminator for 'implicit blocks (not started 
> with
> |class/module/def/do/begin), ie:
>
> For your information, 1.9 once had exact same syntax you've proposed
> for a short while.  I have a time machine.  The idea was abandoned
> since it caused serious unreadability.
always? may be real cause was abuse of this syntax?

well, if suffix did not work,
can we try prefix syntax for 'end'-less constructs?
(if not has been tried before)
suggestion:
    :& - prefixes 'single statement body' code block in
          class/module/def/unless/then/else/while/until
#- samples
    if cond :& puts a
    if cond : puts a else :& puts b
    while cond :& puts a
    for var in expr :& puts var
    # also valid:

    if cond :& (puts a; puts b)
    while cond :& begin puts a end
#- single statements 'chain'
    unless cond_a
        :& for ea in expr
            :& for eb in ezpr
                :& if cond(ea, eb)
                    :& do_smthng
#- simple functor with local state
    class<<fib=Object.new
        :& def get(m)
            :& (@fh||=Hash.new{|h,n|h[n]=n<2?n:h[n-1]+h[n-2]})[m]
    fib.get 10
    #-> 55

BRs
Sergey