simple question about UFCS and templates...wasFound(i) works but not i.wasFound()

[monkyyy]

On Wednesday, 19 March 2025 at 22:26:54 UTC, WhatMeWorry wrote:
> ```
>    bool wasFound(I)(I result)
>     {
>         return(result != -1);
>     }
>
>     bool existPoint(Point b, int cost)
>     {
>         auto i = closed.countUntil(b);
>
>         if(wasFound(i))   // -1 is returned if no point b is 
> found in the range
> ```
>
> The above compiles and executes successfully. But the following 
> fails with:
> app.d(179,13): Error: no property `wasFound` for `i` of type 
> `long`
>
> I thought the templated function would take care of any type.
> ```
>     bool wasFound(I)(I result)
>     {
>         return(result != -1);
>     }
>
>     bool existPoint(Point b, int cost)
>     {
>         auto i = closed.countUntil(b);  // Note: closed
>
>         if(i.wasFound())   // -1 is returned if no point b is 
> found in the range
> ```

ufcs on local functions is hit or miss; theres a old limitation 
that d1 wanted or something; ussally templates do fix it but 
without full context its hard for me to tell the exact reason.