Serious problem with opCmp
Bill Baxter
dnewsgroup at billbaxter.com
Sun Mar 2 14:06:00 PST 2008
kov_serg wrote:
> Bill Baxter Wrote:
>
> In C++ code solution may looks like:
>
> template<class T>int compare(const T& lv,const T& rv) {
> return lv<rv?-1: rv<lv?+1: 0;
> }
>
> and using it like this
> struct S {
> int a,b;
> static int cmp(const S& lv,const S& rv) {
> int t=compare(lv.a,rv.a); if (t) return t;
> return compare(lv.b,rv.b);
> }
> };
> any case it will requires from me only operator<
I'm not sure what point you're trying to make now?
Are you saying D should be like C++ and require only opLess?
I don't think that's going to happen.
But I do think the examples of using opCmp should be changed to be more
like "return lv<rv?-1: rv<lv?+1: 0;" as you said (where lv is member of
'this' in the D version).
--bb
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