rustRust null value example
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.
Example code
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.
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