How to get element type of a slice?

[Ferhat Kurtulmuş via Digitalmars-d-learn]

Hello folks,

Hope everyone is doing fine. Considering the following code, in 
the first condition, I am extracting the type Point from the 
slice Point[]. I searched in the std.traits, and could not find a 
neater solution something like ElementTypeOf!T. Is there any 
neater solution for it? Thanks in advance.

```d
    static if (isArray!VecPoint){
        VecPoint dummy;
        alias Point = typeof(dummy[0]);
    } else static if (isRandomAccessRange!VecPoint){
        alias ASeq2 = TemplateArgsOf!VecPoint;
        alias Point = ASeq2[0];
    } else
        static assert(0, typeof(VecPoint).stringof ~ " type is 
not supported");
```

Ferhat