diff options
Diffstat (limited to 'src/doc/book/listings/ch13-functional-features/listing-13-12')
3 files changed, 28 insertions, 0 deletions
diff --git a/src/doc/book/listings/ch13-functional-features/listing-13-12/Cargo.lock b/src/doc/book/listings/ch13-functional-features/listing-13-12/Cargo.lock new file mode 100644 index 000000000..e91eaa8d4 --- /dev/null +++ b/src/doc/book/listings/ch13-functional-features/listing-13-12/Cargo.lock @@ -0,0 +1,6 @@ +# This file is automatically @generated by Cargo. +# It is not intended for manual editing. +[[package]] +name = "iterators" +version = "0.1.0" + diff --git a/src/doc/book/listings/ch13-functional-features/listing-13-12/Cargo.toml b/src/doc/book/listings/ch13-functional-features/listing-13-12/Cargo.toml new file mode 100644 index 000000000..2652a8a1a --- /dev/null +++ b/src/doc/book/listings/ch13-functional-features/listing-13-12/Cargo.toml @@ -0,0 +1,6 @@ +[package] +name = "iterators" +version = "0.1.0" +edition = "2021" + +[dependencies] diff --git a/src/doc/book/listings/ch13-functional-features/listing-13-12/src/lib.rs b/src/doc/book/listings/ch13-functional-features/listing-13-12/src/lib.rs new file mode 100644 index 000000000..758284044 --- /dev/null +++ b/src/doc/book/listings/ch13-functional-features/listing-13-12/src/lib.rs @@ -0,0 +1,16 @@ +#[cfg(test)] +mod tests { + // ANCHOR: here + #[test] + fn iterator_demonstration() { + let v1 = vec![1, 2, 3]; + + let mut v1_iter = v1.iter(); + + assert_eq!(v1_iter.next(), Some(&1)); + assert_eq!(v1_iter.next(), Some(&2)); + assert_eq!(v1_iter.next(), Some(&3)); + assert_eq!(v1_iter.next(), None); + } + // ANCHOR_END: here +} |