Integers 1
, floats 1.2
, characters 'a'
, strings "abc"
, booleans true
and the unit type ()
can be expressed using literals.
Integers can, alternatively, be expressed using hexadecimal, octal or binary
notation using either of these prefixes: 0x
, 0o
or 0b
.
Underscores can be inserted in numeric literals to improve readability, e.g.
1_000
is the same as 1000
, and 0.000_001
is the same as 0.000001
.
We need to tell the compiler the type of the literals we use. For now,
we'll use the u32
suffix to indicate that the literal is an unsigned 32-bit integer,
and the i32
suffix to indicate that it's a signed 32-bit integer. We'll cover the type
system in another chapter, and give more details about type
annotating literals in their own section.
The operators available and their precedence are similar to other C-like languages.