Groups | Search | Server Info | Keyboard shortcuts | Login | Register [http] [https] [nntp] [nntps]

Groups > comp.lang.python > #21797

Re: Why not use juxtaposition to indicate function application

Show all headers | View raw

On 3/16/2012 9:14 AM, bruno.desthuilliers@gmail.com wrote:
> On Mar 16, 1:45 pm, Ray Song<emacs...@gmail.com>  wrote:
>> I confess i've indulged in Haskell and found
>>      f a
>> more readable than
>>      f(a)
>
> Hmmm... What about:
>
>      f a b
>
> versus
>
>      f(a(b))
>
> or was it supposed to be read as
>
>      f(a)(b)
>
>
> or as
>
>     f(a, b)
>
> ?-)

One also has to consider Python calls with *args, **kwds, and arg=obj. 
These are all compile-time SyntaxErrors unless inside parens that follow 
a expression.

Also, function calls, especially in a functional language without 
side-effects, do not usually occur in isolation.
'f(a) + 3' would have to be written as '(f a) + 3', so saving of parens 
anyway.

Also, is 'f a - 2' f(a -2) or f(a, -2)? A new precedence rule is needed 
to disambiguage.

-- 
Terry Jan Reedy

Back to comp.lang.python | Previous | Next — Previous in thread | Next in thread | Find similar | Unroll thread

Thread

Why not use juxtaposition to indicate function application Ray Song <emacsray@gmail.com> - 2012-03-16 20:45 +0800
  Re: Why not use juxtaposition to indicate function application "bruno.desthuilliers@gmail.com" <bruno.desthuilliers@gmail.com> - 2012-03-16 06:14 -0700
    Re: Why not use juxtaposition to indicate function application Kiuhnm <kiuhnm03.4t.yahoo.it> - 2012-03-16 17:00 +0100
      RE: Why not use juxtaposition to indicate function application "Prasad, Ramit" <ramit.prasad@jpmorgan.com> - 2012-03-16 16:13 +0000
        Re: Why not use juxtaposition to indicate function application Kiuhnm <kiuhnm03.4t.yahoo.it> - 2012-03-16 17:31 +0100
          Re: Why not use juxtaposition to indicate function application Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2012-03-16 16:45 +0000
            Re: Why not use juxtaposition to indicate function application Kiuhnm <kiuhnm03.4t.yahoo.it> - 2012-03-16 18:18 +0100
            Re: Why not use juxtaposition to indicate function application Ian Kelly <ian.g.kelly@gmail.com> - 2012-03-16 11:59 -0600
            Re: Why not use juxtaposition to indicate function application Serhiy Storchaka <storchaka@gmail.com> - 2012-03-16 22:57 +0200
            Re: Why not use juxtaposition to indicate function application Chris Rebert <clp2@rebertia.com> - 2012-03-16 14:02 -0700
            Re: Why not use juxtaposition to indicate function application Serhiy Storchaka <storchaka@gmail.com> - 2012-03-17 00:14 +0200
          Re: Why not use juxtaposition to indicate function application Tony the Tiger <tony@tiger.invalid> - 2012-03-16 16:55 -0500
    Re: Why not use juxtaposition to indicate function application Terry Reedy <tjreedy@udel.edu> - 2012-03-17 00:38 -0400
  Re: Why not use juxtaposition to indicate function application "Colin J. Williams" <cjw@ncf.ca> - 2012-03-16 11:06 -0400
  Haskellizing python (was Why not use juxtaposition to indicate function application) rusi <rustompmody@gmail.com> - 2012-03-16 22:26 -0700
  Re: Why not use juxtaposition to indicate function application Larry Hudson <orgnut@yahoo.com> - 2012-03-16 23:39 -0700

csiph-web