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Re: need {..} block, and switch case, need, and needs keywords

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On 08/02/17 12:26, Rick C. Hodgin wrote:
> David Brown wrote:
>> It would make the "optional" or "discardable" nature of the call
>> to get_something at precisely the location you want -where
>> get_something is called.
> 
> If that's your idea, then I'm back to programming every logic
> step manually, as in my original exame.  The whole purpose of the
> needs {..} block is to simplify that while better documenting the code.
> 

I think you must have misunderstood what I meant.  My version of your
switch would be:

	value = [[discardable]] get_something();
	switch (x) {
		case 0: break;
		case 1: break;
		case 2: break;
		case 3:
			// "value" is used here
			break;
		case 4:
			value2 = get_something_else();
			// "value" and "value2" are valid and in scope
			break;
		default:
			// Not found
			break;
	}



>> And it would make the use of the variable "value" obvious
>> too - you use it if you need it, you don't use it if you don't need it.
>> Why should the programmer also have to write "needs value" as well?
> 
> It documents what it needs in these cases where the value(s)
> are only needed in a subset of all formal cases, and it removes the
> mechanics of underlying work, substituting it with a descriptive name,
> making it easier to understand to new people examining the code.
> 
> -----
> You have polar opposite thinking to mine on almost all areas.
> I have responded as much as I have, but I haven't seen anything
> positive come out of our exchanges, just rigid differences of views.
> I may stop responding to you because of it, as each post you offer
> feels like an certain type of attack.
> 

If my posts feel like an attack, it is because you are not open to
discussion - you are not ready to accept that there can be other ideas
or ways to improve your ideas.  Stop acting as though the /first/
thought that pops into your head has to be the /only/ thought - let your
ideas mature and warp through your own thought and discussions with
others.  Let yourself be inspired by something other than your own ideas.

I will often criticise what you write - but it is /constructive/
criticism.  Sometimes I feel an idea you have is absolutely daft and
counter-productive to good programming - and I will say so, rather than
lying to you.  Your aim is to build a useful and productive programming
language, not a child's drawing to hang on the fridge.  So if I feel you
are going in completely the wrong direction with something, that's what
I will say - because in my opinion, your time and energy would be better
spent in a different direction.  It is, of course, entirely up to /you/
to decide if you agree with me - but I am advising you to the best of my
knowledge, not /attacking/ you or your work.

In this particular case, I think your idea is bad - I think it
introduces complications in syntax, extra keywords, and makes it hard
for a programmer to follow what is going on.  However, it gave rise to
an alternative idea that I think is better - it has minimal syntax,
minimal extra effort for the programmer, but would be more useful in a
wider range of circumstances.  If you don't like this new idea, then
that's fine - don't use it.  But don't take it as an attack.

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need {..} block, and switch case, need, and needs keywords "Rick C. Hodgin" <rick.c.hodgin@gmail.com> - 2017-02-06 07:57 -0800
  Re: need {..} block, and switch case, need, and needs keywords BartC <bc@freeuk.com> - 2017-02-06 16:23 +0000
    Re: need {..} block, and switch case, need, and needs keywords "Rick C. Hodgin" <rick.c.hodgin@gmail.com> - 2017-02-06 08:36 -0800
  Re: need {..} block, and switch case, need, and needs keywords David Brown <david.brown@hesbynett.no> - 2017-02-07 09:39 +0100
    Re: need {..} block, and switch case, need, and needs keywords "Rick C. Hodgin" <rick.c.hodgin@gmail.com> - 2017-02-07 07:32 -0800
      Re: need {..} block, and switch case, need, and needs keywords David Brown <david.brown@hesbynett.no> - 2017-02-08 09:43 +0100
        Re: need {..} block, and switch case, need, and needs keywords "Rick C. Hodgin" <rick.c.hodgin@gmail.com> - 2017-02-08 03:26 -0800
          Re: need {..} block, and switch case, need, and needs keywords David Brown <david.brown@hesbynett.no> - 2017-02-08 14:30 +0100
            Re: need {..} block, and switch case, need, and needs keywords "Rick C. Hodgin" <rick.c.hodgin@gmail.com> - 2017-02-08 05:38 -0800
              Re: need {..} block, and switch case, need, and needs keywords "Rick C. Hodgin" <rick.c.hodgin@gmail.com> - 2017-02-08 05:43 -0800

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