From 67cdcc2e12118becb823e20a40cc2687f2b8425a Mon Sep 17 00:00:00 2001 From: Adam Carpenter <53hornet@gmail.com> Date: Wed, 27 Mar 2019 15:32:37 -0400 Subject: Started Rust in Action MEAP. --- rust-book/ownership/Cargo.lock | 4 ++++ rust-book/ownership/Cargo.toml | 7 ++++++ rust-book/ownership/src/main.rs | 51 +++++++++++++++++++++++++++++++++++++++++ 3 files changed, 62 insertions(+) create mode 100755 rust-book/ownership/Cargo.lock create mode 100755 rust-book/ownership/Cargo.toml create mode 100755 rust-book/ownership/src/main.rs (limited to 'rust-book/ownership') diff --git a/rust-book/ownership/Cargo.lock b/rust-book/ownership/Cargo.lock new file mode 100755 index 0000000..9e4e62d --- /dev/null +++ b/rust-book/ownership/Cargo.lock @@ -0,0 +1,4 @@ +[[package]] +name = "ownership" +version = "0.1.0" + diff --git a/rust-book/ownership/Cargo.toml b/rust-book/ownership/Cargo.toml new file mode 100755 index 0000000..f21df45 --- /dev/null +++ b/rust-book/ownership/Cargo.toml @@ -0,0 +1,7 @@ +[package] +name = "ownership" +version = "0.1.0" +authors = ["Adam Carpenter "] +edition = "2018" + +[dependencies] diff --git a/rust-book/ownership/src/main.rs b/rust-book/ownership/src/main.rs new file mode 100755 index 0000000..1684f55 --- /dev/null +++ b/rust-book/ownership/src/main.rs @@ -0,0 +1,51 @@ +fn main() { + //let words = String::from("hello there world"); + //let words = "hello there world"; + //let first = first_word(&words); + //let second = second_word(&words); + //let last = last_word(&words); + //println!("{}\n{}", first, last); + let a = [1, 2, 3, 4, 5]; + let slice = &a[1..4]; + + for each in slice { + println!("{}", each); + } +} + +fn first_word(s: &str) -> &str { + let bytes = s.as_bytes(); + + for (i, &item) in bytes.iter().enumerate() { + if item == b' ' { + return &s[..i]; + } + } + + &s +} + +fn second_word(s: &str) -> &str { + let bytes = s.as_bytes(); + + for (i, &item) in bytes.iter().enumerate() { + if item == b' ' { + return &s[i + 1..]; + } + } + + &s +} + +fn last_word(s: &str) -> &str { + let bytes = s.as_bytes(); + let mut result = ""; + + for (i, &item) in bytes.iter().enumerate() { + if item == b' ' { + result = &s[i + 1..]; + } + } + + &result +} -- cgit v1.2.3