Trait Tuple4Map1Option 

pub trait Tuple4Map1Option<T0, T1, T2, T3> {
    // Required method
    fn map1<U>(self, f: impl FnOnce(T1) -> U) -> Option<(T0, U, T2, T3)>;
}

Mapping .1 for Tuple4

Required Methods

fn map1<U>(self, f: impl FnOnce(T1) -> U) -> Option<(T0, U, T2, T3)>

Mapping .1 for Tuple4

Dyn Compatibility

This trait is not dyn compatible.

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

Implementations on Foreign Types

impl<T0, T1, T2, T3> Tuple4Map1Option<T0, T1, T2, T3> for Option<(T0, T1, T2, T3)>

fn map1<U>(self, f: impl FnOnce(T1) -> U) -> Option<(T0, U, T2, T3)>

Implementors