RE: Adding scoped local set/param declaration to GMPL
On a more serious note...
I don’t think local set/param declaration is that useful. In the example
given, you could create a one-dimensional array of sets and params that does
the same thing.
-Marc
-Original Message-
From: Help-glpk On
Behalf Of Andrew Makhorin
Sent: Tuesday, August 25, 2020 5:03 PM
To: Domingo Alvarez Duarte ; help-glpk@gnu.org
Subject: Re: Adding scoped local set/param declaration to GMPL
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? ;)
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Re: Adding scoped local set/param declaration to GMPL
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? ;)
Adding scoped local set/param declaration to GMPL
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-param
, 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 !
