Struct alure::RegVal [−][src]
pub struct RegVal(_);
Expand description
Register value, which may be None
Implementations
Compares two values according to given arithmetics
Compares two values according to unsigned arithmetics
Compares two values according to unsigned arithmetics
Compares two values according to short float arithmetics
Compares two values according to long float arithmetics
Methods from Deref<Target = Option<Value>>
🔬 This is a nightly-only experimental API. (option_result_contains)
option_result_contains)Returns true if the option is a Some value containing the given value.
Examples
#![feature(option_result_contains)] let x: Option<u32> = Some(2); assert_eq!(x.contains(&2), true); let x: Option<u32> = Some(3); assert_eq!(x.contains(&2), false); let x: Option<u32> = None; assert_eq!(x.contains(&2), false);
Converts from &Option<T> to Option<&T>.
Examples
Converts an Option<String> into an Option<usize>, preserving the original.
The map method takes the self argument by value, consuming the original,
so this technique uses as_ref to first take an Option to a reference
to the value inside the original.
let text: Option<String> = Some("Hello, world!".to_string()); // First, cast `Option<String>` to `Option<&String>` with `as_ref`, // then consume *that* with `map`, leaving `text` on the stack. let text_length: Option<usize> = text.as_ref().map(|s| s.len()); println!("still can print text: {:?}", text);
Converts from Option<T> (or &Option<T>) to Option<&T::Target>.
Leaves the original Option in-place, creating a new one with a reference
to the original one, additionally coercing the contents via Deref.
Examples
let x: Option<String> = Some("hey".to_owned()); assert_eq!(x.as_deref(), Some("hey")); let x: Option<String> = None; assert_eq!(x.as_deref(), None);
Trait Implementations
Auto Trait Implementations
impl RefUnwindSafe for RegValimpl UnwindSafe for RegValBlanket Implementations
Mutably borrows from an owned value. Read more