Function malachite_base::iterators::nonzero_values

source · [−]

pub const fn nonzero_values<I: Iterator>(xs: I) -> NonzeroValues<I>ⓘNotable traits for NonzeroValues<I>impl<I: Iterator> Iterator for NonzeroValues<I> where
    I::Item: PartialEq<I::Item> + Zero,     type Item = I::Item; where
    I::Item: PartialEq<I::Item> + Zero,

Expand description

Returns an iterator that generates all the nonzero values of a provided iterator.

nonzero_values(xs) generates the same values as xs.filter(|x| x != I::Item::ZERO), but its type is easier to work with.

This iterator will hang if given an iterator that produces an infinite suffix of zeros.

The output length is the number of nonzero values produced by xs.

Examples

extern crate itertools;

use itertools::Itertools;
use malachite_base::iterators::nonzero_values;

assert_eq!(
    nonzero_values([-3i8, -2, -1, 0, 1, 2, 3].iter().cloned()).collect_vec(),
    &[-3, -2, -1, 1, 2, 3]
)