Passing a fixed length array to a function

Question

I want to write a function that can accept arrays of fixed length, but different arrays have different lengths.

I know that i can pass the slice with arr[:] (the function will accept []T), but is there another way, maybe more efficient?

I'm using a struct that i'd like to mantain with fixed length arrays (for documentation purposes), so using slices everywhere at declaration time is not optimal for my purpose.

Just use slice, array is not suitable to be passed as param, it will make a copy, waste space & time, also there are two copy of undering data. — Eric
– Eric, Commented Aug 8, 2018 at 9:52
This answer stackoverflow.com/questions/48849493/… might be of help. — Himanshu
– Himanshu, Commented Aug 8, 2018 at 9:58
Slicing an array is not inefficient at all. See blog.golang.org/slices. — Peter
– Peter, Commented Aug 8, 2018 at 10:29

apxp · Accepted Answer · 2018-08-08 09:42:50Z

6

No there is no way to pass different size arrays, because the length of an array is part of the type.

For example [3]int is a different type then [2]int.

At all in Go it is not recommended to use arrays you should use slices (https://golang.org/doc/effective_go.html#arrays).

answered Aug 8, 2018 at 9:42

apxp

6,0644 gold badges25 silver badges45 bronze badges

Sign up to request clarification or add additional context in comments.

1 Comment

Eric Over a year ago

Another reason not to use array is, when pass array as param, it will make a copy, anyway this won't work.

Collectives™ on Stack Overflow

Passing a fixed length array to a function

1 Answer 1

1 Comment

Your Answer

Linked

Hot Network Questions

Collectives™ on Stack Overflow

1 Answer 1

1 Comment

Your Answer

Sign up or log in

Post as a guest

Linked

Related