Rollup merge of rust-lang#33032 - kindlychung:patch-3, r=Manishearth

Update casting-between-types.md
Manishearth · Apr 17, 2016 · 43c23e5 · 43c23e5
2 parents 5fc8065 + 6c93c92
commit 43c23e5
Showing 1 changed file with 9 additions and 4 deletions.
diff --git a/src/doc/book/casting-between-types.md b/src/doc/book/casting-between-types.md
@@ -165,10 +165,15 @@ Rust lets us:
 ```rust
 use std::mem;
 
-unsafe {
- let a = [0u8, 0u8, 0u8, 0u8];
-
- let b = mem::transmute::<[u8; 4], u32>(a);
+fn main() {
+ unsafe {
+ let a = [0u8, 1u8, 0u8, 0u8];
+ let b = mem::transmute::<[u8; 4], u32>(a);
+ println!("{}", b); // 256
+ // or, more concisely:
+ let c: u32 = mem::transmute(a);
+ println!("{}", c); // 256
+ }
 }
 ```