Re: Adding scoped local set/param declaration to GMPL

[Andrew Makhorin]

On Tue, 2020-08-25 at 22:12 +0200, Domingo Alvarez Duarte wrote:
> Hello !
> 
> I'm experimenting with allow local set/param declarations inside
> scoped 
> blocks (for/if/then/else), it's the base to possibly experiment
> further 
> with problem/callback/function declarations you can see/experiment
> with 
> it in this branch https://github.com/mingodad/GLPK/tree/local-set-para
> m 
> , look at 
> https://github.com/mingodad/GLPK/blob/local-set-param/examples/shikaku
> -if.mod 
> and 
> https://github.com/mingodad/GLPK/blob/local-set-param/examples/test-if
> .mod 
> to see it's usage.
> 
> ====
> 
> for{i in 1..4} {
>      printf "now we are at %d\n", i;
>      if i mod 2 = 0 then { #assert when missing "= 0"
>          param lp := i+10;
>          set ls := {1..i+1};
>          printf "nested if lp = %d\n", lp;
>          display ls;
>      }
>      param lp := i+20;
>      set ls := {1..i+2};
>      printf "nested for lp = %d\n", lp;
>      display ls;
> }
> 
> ====
> 
> Any comment/suggestion is welcome !
> 
> Cheers !
> 
> 
> 

I guess the next step will be implementation of classes? ;)