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docs: Iterator adapters have unspecified results after a panic #67564

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Dec 30, 2019
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docs: Iterator adapters have unspecified results after a panic #67564

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5 changes: 5 additions & 0 deletions src/libcore/iter/mod.rs
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Expand Up @@ -216,6 +216,11 @@
//! Common iterator adapters include [`map`], [`take`], and [`filter`].
//! For more, see their documentation.
//!
//! If an iterator adapter panics, the iterator will be in an unspecified (but
//! memory safe) state. This state is also not guaranteed to stay the same
//! across versions of Rust, so you should avoid relying on the exact values
//! returned by an iterator which panicked.
//!
//! [`map`]: trait.Iterator.html#method.map
//! [`take`]: trait.Iterator.html#method.take
//! [`filter`]: trait.Iterator.html#method.filter
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