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Re: Limit number of function parameters (was:Why does savepng workl with eventlistener but not by call from form?)

From Scott Sauyet <scott@sauyet.com>
Newsgroups comp.lang.javascript
Subject Re: Limit number of function parameters (was:Why does savepng workl with eventlistener but not by call from form?)
Date 2016-11-29 02:15 +0000
Organization A noiseless patient Spider
Message-ID <o1iocn$bb6$1@dont-email.me> (permalink)
References (5 earlier) <4504999.NdOOCcYCMV@PointedEars.de> <o1d4q7$c90$1@solani.org> <1768059.oMNUckLgyt@PointedEars.de> <o1dblq$pr$1@dont-email.me> <o1hora$93u$1@solani.org>

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Christoph M. Becker wrote:
> Scott Sauyet wrote:
>> Thomas 'PointedEars' Lahn wrote:
>>> Christoph M. Becker wrote:
>>>> Thomas 'PointedEars' Lahn wrote:

>>> [Explanation why Thomas prefers at most 5 function parameters.]
> 
> Thanks!
> 
>> Of course this is not a serious disagreement.  Clearly the main rule is
>> to limit one's parameter list as well as one can.  But I'm always
>> curious as to how people decide upon their particular limits.
> 
> FWIW, I quite like Robert C. Martin's rule regarding function
> arguments[1] (even though I don't always follow it):se

"A foolish consistency is the hobgoblin of little minds." 
    -- Ralph Waldo Emerson

>| The ideal number of arguments for a function is zero (niladic). Next 
>| comes one (monadic), followed closely by two (dyadic). Three arguments
>| (triadic) should be avoided where possible. More than three
>| (polyadic) requires very special justification and then shouldn't be 
>| used anyway.
> 
> This rule is given in an OOP context, so for functional or procedural
> style most likely one should be added (niladic functional or procedural
> functions rarely make sense).

I agree.  This sounds exactly right.  There are of course uses of unary 
functions in functional programming, but that's either at the boundary of 
a program or as thunks of computation set aside to be processed if 
they're actually needed.  Neither has anything to do with API design.

 
> [1] Clean Code: A Handbook of Agile Software Craftsmanship

I don't know why that classic has never bubbled its way to the top of my 
to-read list.  One of these days...

  -- Scott

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Thread

Why does savepng workl with eventlistener but not by call from form? jonas.thornvall@gmail.com - 2016-11-10 14:35 -0800
  Re: Why does savepng workl with eventlistener but not by call from form? jonas.thornvall@gmail.com - 2016-11-10 15:47 -0800
    Re: Why does savepng workl with eventlistener but not by call from form? JJ <jj4public@vfemail.net> - 2016-11-11 21:05 +0700
      Re: Why does savepng workl with eventlistener but not by call from form? jonas.thornvall@gmail.com - 2016-11-11 06:35 -0800
        Re: Why does savepng workl with eventlistener but not by call from form? JJ <jj4public@vfemail.net> - 2016-11-11 22:01 +0700
          Re: Why does savepng workl with eventlistener but not by call from form? Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2016-11-11 16:21 +0100
      Re: Why does savepng workl with eventlistener but not by call from form? Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2016-11-11 16:08 +0100
        Re: Why does savepng workl with eventlistener but not by call from form? Scott Sauyet <scott@sauyet.com> - 2016-11-26 21:09 +0000
          Re: Why does savepng workl with eventlistener but not by call from form? Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2016-11-26 22:47 +0100
            Re: Why does savepng workl with eventlistener but not by call from form? "Christoph M. Becker" <cmbecker69@arcor.de> - 2016-11-27 00:11 +0100
              Re: Why does savepng workl with eventlistener but not by call from form? Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2016-11-27 00:57 +0100
                Re: Why does savepng workl with eventlistener but not by call from form? Scott Sauyet <scott@sauyet.com> - 2016-11-27 01:08 +0000
                Re: Limit number of function parameters (was:Why does savepng workl with eventlistener but not by call from form?) "Christoph M. Becker" <cmbecker69@arcor.de> - 2016-11-28 18:17 +0100
                Re: Limit number of function parameters (was:Why does savepng workl with eventlistener but not by call from form?) Scott Sauyet <scott@sauyet.com> - 2016-11-29 02:15 +0000
                Re: Limit number of function parameters "Christoph M. Becker" <cmbecker69@arcor.de> - 2016-12-02 20:24 +0100
                Re: Limit number of function parameters Scott Sauyet <scott@sauyet.com> - 2016-12-03 01:58 +0000

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