Noob question: how to create an array?

[tmssngr]

In Java I would write final byte[] buffer = new byte[1024];. In Go, I think, it should be buffer := make([]byte, 1024), but how to create such a buffer with Lisette? I've searched the documentation for make, but didn't find a helpful answer.

[stormpat]

Lisette supports Go slices, but not (yet) Go arrays. The difference is that a slice in Go (and Lisette) is dynamically sized, while an array is fixed (it can't be resized).

Your code example is actually a slice, but preallocated; the runtime preallocates 1024 bytes for it. Lisette also does not (yet) support preallocating slices.

The simplest way to create a byte-slice is simply manually giving it a type (as a plain number defaults to int):

// byte is an alias for uint8, so both of these are equivalent, and can hold values from 0 to 255

let buffer: Slice<byte> = [0, 255]
let buffer: Slice<uint8> = [0, 255]

// alternatively
let mut c = Slice.new<byte>()
c = c.append(1)

// or even
let mut c = Slice.new() // Type is Slice<T>
c = c.append(1 as byte) // After this its cast to Slice<byte>

@ivov Maybe a Slice.allocate<T>(len = int, cap = int) could be something to think about?