Newbie in golang.
func OutputMe(mainContent []any, dimX, dimY byte, strategy string) (message string, e error)
try to pass []int{1,2,35} and always get an error
cannot use []int{…} (value of type []int) as []any value
what am i doing wrong?
Oi! Can you please format this code? Put the shared code inside an code snippet block, you can just select the code and use the </> button
package main
func main() {
// ...code code
}
Please share more about the code, It’s kinda hard to understand what you are trying to do
was thinking that is possible to implement some method with []any and then provide []integer{1,2,3,4,-6} like an argument
Go has strong static typing model and type []any implies you to use exactly this type, not another. What you are trying to do is generic programming, e.g.,
func fn[T []E, E any](sl T) {
// Your code goes here...
}
But in this case you need to guarantee, that the code in your function will be able to handle any, since it’s every possible type. Imho, if you are not using generics, it is better to define exact type of the argument.
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I think change ny to just only any, so
func OutputMe(mainContent any, dimX, dimY byte, strategy string) (message string, e error)
Then if you are working with []int inside the function, you will need to do type assertion.
Obviously you don’t understand the data structure, []int is an array of integers, let’s say it’s in a 64-bit system, then each element occupies 64 bits, []any, where any is the pointer, and the pointer occupies 64 bits. Although it seems, both occupy 64 bits, []string and []any, can you guarantee that string takes 64 bits? So []any is not the same as any slice. You should iterate over []int and stuff it into []any.
go doesnt support implicit type conversions between slices. theres no way to cast []any between other data structures in go.
also, the data structure of []any is an empty interface that stores pointers to values of different types, while []int stores values directly.
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