Go does not have a notion of casting, and working towards a solution
that starts with a need for generics will end in tears.
If you want to have a universal numeric -> float64 conversion, this[1]
might work, though I really don't think it is a good idea, and won't
help in your broader scheme to make a Min(a, b T) T since you can't
compile type specify the returned T generically. The best you can do is
Min(a, b T) interface{}.
In practice, it's better to implement a min(a, b T) T for each T that
you actually need (it's only 5 lines for each type and you probably
don't need every numerical type).
[1]https://play.golang.org/p/K7TnHHAx5O
On Thu, 2017-01-12 at 10:56 +0800, hui zhang wrote:
> If I want to cast interface{} to float64
> interface{} could be int8 int16 int32 int64 float32.....
> What is the proper way.
>
> consider a generic function for min
> func Min(a T, b T) T {
> }
> What is the best way to implement it in go
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