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.
Helpful links
Related
More of Rust
- How to match whitespace with a regex in Rust?
- How to replace a capture group using Rust regex?
- How to replace strings using Rust regex?
- How to replace all matches using Rust regex?
- How to parse a file with Rust regex?
- How to split a string with Rust regex?
- Regex example to match multiline string in Rust?
- How to use regex lookahead in Rust?
- How to split a Rust slice into chunks?
- How to iterate hashset in Rust
See more codes...