1 unstable release
Uses old Rust 2015
0.1.0 | Aug 15, 2015 |
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#29 in #true
6KB
56 lines
Take While with Failure
This library implements an additional iterator for rust.
Creates an iterator that yields elements as long as the predicate returns true. Additionally, it includes the first element that returns false, after which no further elements will be yielded.
This can be useful if, for example, you would like to read a stream until the first error and then stop processing immediately without losing the error.
Example
let a = [1, 2, 3, 4, 5];
let mut it = a.iter().take_while_with_failure(|&a| *a < 2);
assert_eq!(it.next(), Some(&1));
assert_eq!(it.next(), Some(&2));
assert!(it.next().is_none());