Two minor issues; you can’t declare func (m *Matrix[float64]) NanToZero()
because we don’t have specialisation, it needs to be func (m *Matrix[T])
NanToZero(), and you can’t have complex as one of the possible types because
it’s impossible to convert a complex to a float.
Hello everybody,
Gophers' superpower is required and highly appreciated.
I have two types, A and B, each of which has a method named "M". This
method accepts a string and returns an instance of the type it is declared
on.
```go
type A struct {}
func (a A) M (string) A {
return a
}
type B
I made a playground if anyone wants to play with it and figure out how to
test their ideas.
https://go.dev/play/p/h1nqHJAdVG8
On Sunday, September 10, 2023 at 12:24:54 AM UTC+1 Jason E. Aten wrote:
> Like how, specifically?
>
> func (m *Matrix[float64]) NanToZero() {
> for i := 0; i <
Like how, specifically?
func (m *Matrix[float64]) NanToZero() {
for i := 0; i < m.Nrow; i++ {
for j := 0; j < m.Ncol; j++ {
v := m.At(i, j).(float64)
if math.IsNaN(v) {
m.Set(i, j, 0)
}
}
}
}
gives
./slurp1.go:944:9:
On Sat, 2023-09-09 at 15:39 -0700, Jason E. Aten wrote:
> New to generics... how can I write a method for a Matrix[float64]
> that uses a math function that expects a float64? I get:
>
> ./slurp1.go:936:18: cannot use m.At(i, j) (value of type float64
> constrained by Addable) as float64 value
New to generics... how can I write a method for a Matrix[float64] that uses
a math function that expects a float64? I get:
./slurp1.go:936:18: cannot use m.At(i, j) (value of type float64
constrained by Addable) as float64 value in argument to math.IsNaN
Casting it to float64() does not
You seem to be barking up the wrong tree, at least for the moment. Maybe
your team may want to learn more about cgo and by sheer coincidence there's
a blog post https://shane.ai/posts/cgo-performance-in-go1.21/ that might
serve as a starting point, with one or two pointers to go further. I
