January 2018
Beginner to intermediate
454 pages
10h 8m
English
Content preview from Rust Programming By Example
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Integer types
The following integer types are available in Rust:
| Unsigned | Signed |
|---|---|
| u8 | i8 |
| u16 | i16 |
| u32 | i32 |
| u64 | i64 |
| usize | isize |
The u means unsigned, while the i means signed, and the number following it is the number of bits. For instance, a number of the u8 type can be between 0 and 255, inclusive. And a number of the i16 type can be between -32768 and 32767, inclusive. The size variants are the pointer-sized integer types: usize and isize are 64-bit on a 64-bit CPU. The default integer type is i32, which means that this type will be used by the type inference when it cannot choose a more specific type.
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