pub trait FromUsize: Sized {
// Required method
fn from_usize(n: usize) -> Option<Self>;
}Expand description
Specifies how to obtain an instance of this numeric type
equal to the usize primitive. If the number is too large to
represent in this type, None should be returned instead.
The boilerplate implementations for primitives is performed with a macro. If a primitive type is missing from this list, please open an issue to add it in.
Required Methods§
fn from_usize(n: usize) -> Option<Self>
Dyn Compatibility§
This trait is not dyn compatible.
In older versions of Rust, dyn compatibility was called "object safety", so this trait is not object safe.