Trait RFactor 

pub trait RFactor:
    MatchArg
    + Copy
    + 'static {
    // Required methods
    fn to_level_index(self) -> i32;
    fn from_level_index(idx: i32) -> Option<Self>;
}

Trait for mapping Rust enums to R factors.

Typically implemented via #[derive(RFactor)] for C-style enums. The derive macro also generates IntoR and TryFromSexp implementations.

Required Methods

fn to_level_index(self) -> i32

Convert variant to 1-based level index.

fn from_level_index(idx: i32) -> Option<Self>

Convert 1-based level index to variant, or None if out of range.

Dyn Compatibility

This trait is not dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety".

Implementors