docs: improved reinterpret docstring

This commit is contained in:
Giuliano Macedo
2024-12-08 16:20:09 -03:00
parent db1b67daba
commit 6785a485e3

View File

@@ -48,22 +48,41 @@ to_type :: proc(buf: []u8, $T: typeid) -> (T, bool) #optional_ok {
}
/*
Turn a slice of one type, into a slice of another type.
Turn a slice of one type, into a slice of another type.
Only converts the type and length of the slice itself.
The length is rounded down to the nearest whole number of items.
Only converts the type and length of the slice itself.
The length is rounded down to the nearest whole number of items.
Example:
import "core:fmt"
import "core:slice"
i64s_as_i32s :: proc() {
large_items := []i64{1, 2, 3, 4}
small_items := slice.reinterpret([]i32, large_items)
assert(len(small_items) == 8)
fmt.println(large_items, "->", small_items)
}
bytes_as_i64s :: proc() {
small_items := [12]byte{}
small_items[0] = 1
small_items[8] = 2
large_items := slice.reinterpret([]i64, small_items[:])
assert(len(large_items) == 1) // only enough bytes to make 1 x i64; two would need at least 8 bytes.
fmt.println(small_items, "->", large_items)
}
reinterpret_example :: proc() {
i64s_as_i32s()
bytes_as_i64s()
}
Output:
[1, 2, 3, 4] -> [1, 0, 2, 0, 3, 0, 4, 0]
[1, 0, 0, 0, 0, 0, 0, 0, 2, 0, 0, 0] -> [1]
```
large_items := []i64{1, 2, 3, 4}
small_items := slice.reinterpret([]i32, large_items)
assert(len(small_items) == 8)
```
```
small_items := []byte{1, 0, 0, 0, 0, 0, 0, 0,
2, 0, 0, 0}
large_items := slice.reinterpret([]i64, small_items)
assert(len(large_items) == 1) // only enough bytes to make 1 x i64; two would need at least 8 bytes.
```
*/
@(require_results)
reinterpret :: proc "contextless" ($T: typeid/[]$U, s: []$V) -> []U {