// plain
Null values in Rust are represented by the Option
enum. Option
is an enum with two variants, Some
and None
. Some
is used to wrap a value, while None
is used to indicate the absence of a value.
let x: Option<i32> = None;
This code creates a variable x
of type Option<i32>
and assigns it the value None
. This indicates that x
does not have a value.
group: rust-null