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docs: better demonstrate that None values are skipped as many times as needed

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This commit is contained in:
Tshepang Lekhonkhobe 2020-07-17 07:00:20 +02:00
parent 8534be72fc
commit 08b4b54417
1 changed files with 2 additions and 4 deletions
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6
src/libcore/iter/traits/iterator.rs
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@ -756,12 +756,11 @@ pub trait Iterator {
/// Basic usage:
///
/// ```
/// let a = ["1", "lol", "3", "NaN", "5"];
/// let a = ["1", "two", "NaN", "four", "5"];
///
/// let mut iter = a.iter().filter_map(|s| s.parse().ok());
///
/// assert_eq!(iter.next(), Some(1));
/// assert_eq!(iter.next(), Some(3));
/// assert_eq!(iter.next(), Some(5));
/// assert_eq!(iter.next(), None);
/// ```
@ -769,10 +768,9 @@ pub trait Iterator {
/// Here's the same example, but with [`filter`] and [`map`]:
///
/// ```
/// let a = ["1", "lol", "3", "NaN", "5"];
/// let a = ["1", "two", "NaN", "four", "5"];
/// let mut iter = a.iter().map(|s| s.parse()).filter(|s| s.is_ok()).map(|s| s.unwrap());
/// assert_eq!(iter.next(), Some(1));
/// assert_eq!(iter.next(), Some(3));
/// assert_eq!(iter.next(), Some(5));
/// assert_eq!(iter.next(), None);
/// ```