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From: Bart <bc@freeuk.com>
Newsgroups: comp.lang.c
Subject: Re: on allowing "int a" definition everywhere
Date: Tue, 27 Aug 2024 19:59:13 +0100
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On 27/08/2024 19:44, fir wrote:
> fir wrote:

>> on fictional snippet (probebly not working)
>>
>> void draw_line( float x, float y, float x2, float y2, unsigned color)
>> {
>>      float
>>       wx=dist(x,x2),wy=dist(y,y2); int m=wx<wy?wx:wy;
>>       float dx=wx/m,dy=wy/m;for(int
>> i=0;i<(int)m;i++)set_pixel(x+=dx,y+=dy,color);
>> }
>>
>> thin skin
>>
>> draw_line`x`y`x2`y2`color
>> {
>>      `wx=dist x x2,`wy=dist y y2,`M=(wx<wy?wx!wy)
>>      `dx=wx/m,`dy=wy/m, M'set_pixel x+=dx y+=dy color;
>> }
>>
> though eventualy it canm be written shorter i guess
> 
>   draw_line`x`y`x2`y2`color:
>   `m = min 'wx=abs x2-x 'wy=abs y2-y) ' set_pixel x+=wx/m y+=wy/m color;
>   ;
> 
> not to say it lookin specially good but welll..

There are ways to have more compact syntax without it turning weird, 
leaving out types, and using backtick separators and other strange 
punctuation (or is that lone ')' a typo?).

Start with this version:

   void draw_line( float x, float y, float x2, float y2, unsigned color)
   {
       float
        wx=dist(x,x2),wy=dist(y,y2); int m=wx<wy?wx:wy;
        float 
dx=wx/m,dy=wy/m;for(inti=0;i<(int)m;i++)set_pixel(x+=dx,y+=dy,color);
  }

For example:

    void draw_line(f32 x, y, x2, y2; u32 colour) {
        f32 wx = dist(x, y2), wy = dist(y, y2)
        int m = min(wx, wy)
        repeat m {
            set_pixel(x += wx/m, y += wy/m, colour)
        }
    }

Summary:

- Allow shared types in parameter lists
- Auto semicolon insertion
- Built-in 'min/max' operators
- New repeat-n-times loop
- Shorter type names