Trait aoko::standard::parallelisms::par_vec_ext::StdVecExt2

pub trait StdVecExt2<'a, T, R> where
    T: 'a, {
    fn map(&'a self, f: impl Fn(&'a T) -> R + Sync + Send) -> Vec<R>;
    fn filter_map(
        &'a self, 
        f: impl Fn(&'a T) -> Option<R> + Sync + Send
    ) -> Vec<R>;
}

This trait is to implement some extension functions for Vec type, which need two generic types and reference.

Required methods

fn map(&'a self, f: impl Fn(&'a T) -> R + Sync + Send) -> Vec<R>

fn filter_map(&'a self, f: impl Fn(&'a T) -> Option<R> + Sync + Send) -> Vec<R>

Implementations on Foreign Types

impl<'a, T, R> StdVecExt2<'a, T, R> for Vec<T> where
    T: 'a + Sync,
    R: Send, 

fn map(&'a self, f: impl Fn(&'a T) -> R + Sync + Send) -> Vec<R>

Returns a Vec containing the results of applying the given f function to each element in the original Vec.

Examples

use aoko::standard::parallelisms::par_vec_ext::*;

assert_eq!(vec![1, 2, 3].map(|i| i + 1), vec![2, 3, 4]);

fn filter_map(&'a self, f: impl Fn(&'a T) -> Option<R> + Sync + Send) -> Vec<R>

A combined map and filter. Filtering is handled via Option instead of Boolean such that the output type R can be different than the input type T.

Examples

use aoko::standard::parallelisms::par_vec_ext::*;

let v = vec!["apple", "1", "banana", "2"]
    .filter_map(|s| s.parse::<u8>().ok());
assert_eq!(v, vec![1, 2]);

Implementors