pub trait Symbol: Copy + Eq {
// Required methods
fn try_from_usize(index: usize) -> Option<Self>;
fn to_usize(self) -> usize;
}Expand description
Types implementing this trait can be used as symbols for string interners.
The StringInterner::get_or_intern
method returns Symbol types that allow to look-up the original string
using StringInterner::resolve.
§Note
Optimal symbols allow for efficient comparisons and have a small memory footprint.
Required Methods§
Sourcefn try_from_usize(index: usize) -> Option<Self>
fn try_from_usize(index: usize) -> Option<Self>
Creates a symbol from a usize.
Returns None if index is out of bounds for the symbol.
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.