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author | Adam Carpenter <53hornet@gmail.com> | 2019-03-26 15:05:10 -0400 |
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committer | Adam Carpenter <53hornet@gmail.com> | 2019-03-26 15:05:10 -0400 |
commit | 5718a0b54869b341bc74416bf82b716aa15d582c (patch) | |
tree | 0a1ab65ecc854733c15011f364524bde8379ae1b /advanced/adv-fn-closure/src/main.rs | |
parent | 29db8e4c4182877e5e723e26e2c5ae11e9383520 (diff) | |
download | learning-rust-5718a0b54869b341bc74416bf82b716aa15d582c.tar.xz learning-rust-5718a0b54869b341bc74416bf82b716aa15d582c.zip |
Finished web server project. Book done!
Diffstat (limited to 'advanced/adv-fn-closure/src/main.rs')
-rw-r--r-- | advanced/adv-fn-closure/src/main.rs | 82 |
1 files changed, 74 insertions, 8 deletions
diff --git a/advanced/adv-fn-closure/src/main.rs b/advanced/adv-fn-closure/src/main.rs index d31bd90..064f300 100644 --- a/advanced/adv-fn-closure/src/main.rs +++ b/advanced/adv-fn-closure/src/main.rs @@ -1,13 +1,79 @@ -fn add_one(x: i32) -> i32 { - x + 1 -} +use hello_macro::HelloMacro; +//use hello_macro_derive::HelloMacro; + +struct Pancakes; -fn do_twice(f: fn(i32) -> i32, arg: i32) -> i32 { - f(arg) + f(arg) +impl HelloMacro for Pancakes { + fn hello_macro() { + println!("pancakes"); + } } fn main() { - let answer = do_twice(add_one, 5); - - println!("{}", answer); + Pancakes::hello_macro(); } + +//fn add_one(x: i32) -> i32 { +// x + 1 +//} +// +//fn do_twice(f: fn(i32) -> i32, arg: i32) -> i32 { +// f(arg) + f(arg) +//} + + +//fn returns_closure() -> Box<dyn Fn(i32) -> i32> { +// Box::new(|x| x + 1) +//} +// +// +//enum Status { +// Value(u32), +// Stop, +//} + + +//#[macro_export] +//macro_rules! vec { +// ( $( $x:expr ), * ) => { +// { +// let mut temp_vec = Vec::new(); +// $( +// temp_vec.push($x); +// )* +// temp_vec +// } +// }; +//} + + +//#[some_attribute] +//pub fn some_name(input: TokenStream) -> TokenStream { +//} +// +// +//fn main() { +// let answer = do_twice(add_one, 5); +// +// println!("{}", answer); + + +// let list_of_numbers = vec![1, 2, 3]; +// let list_of_strings: Vec<String> = list_of_numbers +// .iter() +// .map(ToString::to_string) +// .collect(); +// dbg!(list_of_strings); + + +// let list_of_statuses: Vec<Status> = +// (0u32..20) +// .map(Status::Value) +// .collect(); + + + //returns_closure(); + + + +//} |