Upgrade rust/crates/itertools to 0.10.0 am: 6f798715de am: b1d1cd1ee8 am: e7475af424android-12.1.0_r9android-12.1.0_r8android-12.1.0_r7android-12.1.0_r26android-12.1.0_r25android-12.1.0_r24android-12.1.0_r23android-12.1.0_r22android-12.1.0_r21android-12.1.0_r20android-12.1.0_r19android-12.1.0_r18android-12.1.0_r17android-12.1.0_r16android-12.1.0_r15android-12.1.0_r14android-12.1.0_r13android-12.1.0_r12android-12.1.0_r11android-12.1.0_r10android-12.0.0_r32android-12.0.0_r29android-12.0.0_r28android-12.0.0_r27android-12.0.0_r26android-12.0.0_r21android-12.0.0_r20android-12.0.0_r19android-12.0.0_r18android-12.0.0_r16android12L-devandroid12L-d2-s8-releaseandroid12L-d2-s7-releaseandroid12L-d2-s6-releaseandroid12L-d2-s5-releaseandroid12L-d2-s4-releaseandroid12L-d2-s3-releaseandroid12L-d2-s2-releaseandroid12L-d2-s1-releaseandroid12L-d2-releaseandroid12-qpr3-s7-releaseandroid12-qpr3-s6-releaseandroid12-qpr3-s5-releaseandroid12-qpr3-s4-releaseandroid12-qpr3-s3-releaseandroid12-qpr3-s2-releaseandroid12-qpr3-s1-releaseandroid12-qpr3-releaseandroid12-qpr1-releaseandroid12-qpr1-d-s3-releaseandroid12-qpr1-d-s2-releaseandroid12-qpr1-d-s1-releaseandroid12-qpr1-d-releaseandroid12-dev

Original change: https://android-review.googlesource.com/c/platform/external/rust/crates/itertools/+/1662678

Change-Id: Ic90558e20c754158850e38f901c0cefd7a9bc6f3

1 files changed, 13 insertions, 20 deletions

diff --git a/src/sources.rs b/src/sources.rs
index 17d9ff9..5bb6afe 100644
--- a/src/sources.rs
+++ b/src/sources.rs
@@ -7,7 +7,7 @@ use std::mem;
 
 /// See [`repeat_call`](../fn.repeat_call.html) for more information.
 #[derive(Clone)]
-#[deprecated(note="Use std repeat_with() instead", since="0.8")]
+#[deprecated(note="Use std repeat_with() instead", since="0.8.0")]
 pub struct RepeatCall<F> {
     f: F,
 }
@@ -39,7 +39,7 @@ impl<F> fmt::Debug for RepeatCall<F>
 ///     vec![1, 1, 1, 1, 1]
 /// );
 /// ```
-#[deprecated(note="Use std repeat_with() instead", since="0.8")]
+#[deprecated(note="Use std repeat_with() instead", since="0.8.0")]
 pub fn repeat_call<F, A>(function: F) -> RepeatCall<F>
     where F: FnMut() -> A
 {
@@ -52,7 +52,7 @@ impl<A, F> Iterator for RepeatCall<F>
     type Item = A;
 
     #[inline]
-    fn next(&mut self) -> Option<A> {
+    fn next(&mut self) -> Option<Self::Item> {
         Some((self.f)())
     }
 
@@ -76,22 +76,21 @@ impl<A, F> Iterator for RepeatCall<F>
 ///
 /// use itertools::unfold;
 ///
-/// let (mut x1, mut x2) = (1u32, 1u32);
-/// let mut fibonacci = unfold((), move |_| {
+/// let mut fibonacci = unfold((1u32, 1u32), |(x1, x2)| {
 ///     // Attempt to get the next Fibonacci number
-///     let next = x1.saturating_add(x2);
+///     let next = x1.saturating_add(*x2);
 ///
 ///     // Shift left: ret <- x1 <- x2 <- next
-///     let ret = x1;
-///     x1 = x2;
-///     x2 = next;
+///     let ret = *x1;
+///     *x1 = *x2;
+///     *x2 = next;
 ///
 ///     // If addition has saturated at the maximum, we are finished
-///     if ret == x1 && ret > 1 {
-///         return None;
+///     if ret == *x1 && ret > 1 {
+///         None
+///     } else {
+///         Some(ret)
 ///     }
-///
-///     Some(ret)
 /// });
 ///
 /// itertools::assert_equal(fibonacci.by_ref().take(8),
@@ -128,15 +127,9 @@ impl<A, St, F> Iterator for Unfold<St, F>
     type Item = A;
 
     #[inline]
-    fn next(&mut self) -> Option<A> {
+    fn next(&mut self) -> Option<Self::Item> {
         (self.f)(&mut self.state)
     }
-
-    #[inline]
-    fn size_hint(&self) -> (usize, Option<usize>) {
-        // no possible known bounds at this point
-        (0, None)
-    }
 }
 
 /// An iterator that infinitely applies function to value and yields results.