blob: 43dd2c362776412d7f250a5c121c8a42f922c297 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
|
//
// It's important to note that variable pointers and constant pointers
// are different types.
//
// Given:
//
// var foo: u8 = 5;
// const bar: u8 = 5;
//
// Then:
//
// &foo is of type "*u8"
// &bar is of type "*const u8"
//
// You can always make a constant pointer to a variable, but you cannot
// make a variable pointer to a constant. This sounds like a logic puzzle,
// but it just means that once data is declared immutable, you can't
// coerce it to a mutable type. It's a safety thing (to prevent mistakes).
//
const std = @import("std");
pub fn main() void {
const a: u8 = 12;
const b: *u8 = &a; // fix this!
std.debug.print("a: {}, b: {}\n", .{ a, b.* });
}
|
