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Values

Here are some basic built-in types, and the syntax for literal values of each type.

	Types	Literals
Signed integers	i8, i16, i32, i64, i128, isize	-10, 0, 1_000, 123_i64
Unsigned integers	u8, u16, u32, u64, u128, usize	0, 123, 10_u16
Floating point numbers	f32, f64	3.14, -10.0e20, 2_f32
Unicode scalar values	char	'a', 'α', '∞'
Booleans	bool	true, false

The types have widths as follows:

• iN, uN, and fN are N bits wide,
• isize and usize are the width of a pointer,
• char is 32 bits wide,
• bool is 8 bits wide.

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There are a few syntaxes that are not shown above:

• All underscores in numbers can be left out, they are for legibility only. So 1_000 can be written as 1000 (or 10_00), and 123_i64 can be written as 123i64.

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