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.

---
 functional/Cargo.lock  |   4 --
 functional/Cargo.toml  |   7 --
 functional/src/main.rs | 188 -------------------------------------------------
 3 files changed, 199 deletions(-)
 delete mode 100644 functional/Cargo.lock
 delete mode 100644 functional/Cargo.toml
 delete mode 100644 functional/src/main.rs

(limited to 'functional')

diff --git a/functional/Cargo.lock b/functional/Cargo.lock
deleted file mode 100644
index ba41a73..0000000
--- a/functional/Cargo.lock
+++ /dev/null
@@ -1,4 +0,0 @@
-[[package]]
-name = "functional"
-version = "0.1.0"
-
diff --git a/functional/Cargo.toml b/functional/Cargo.toml
deleted file mode 100644
index 960ba85..0000000
--- a/functional/Cargo.toml
+++ /dev/null
@@ -1,7 +0,0 @@
-[package]
-name = "functional"
-version = "0.1.0"
-authors = ["Adam Carpenter <53hornet@gmail.com>"]
-edition = "2018"
-
-[dependencies]
diff --git a/functional/src/main.rs b/functional/src/main.rs
deleted file mode 100644
index 7749e58..0000000
--- a/functional/src/main.rs
+++ /dev/null
@@ -1,188 +0,0 @@
-//use std::thread;
-//use std::time::Duration;
-//
-//struct Cacher<T>
-//    where T: Fn(u32) -> u32
-//{
-//    calculation: T,
-//    value: Option<u32>,
-//}
-//
-//impl<T> Cacher<T>
-//    where T: Fn(u32) -> u32
-//{
-//    fn new (calculation: T) -> Cacher<T> {
-//        Cacher {
-//            calculation,
-//            value: None,
-//        }
-//    }
-//
-//    fn value(&mut self, arg: u32) -> u32 {
-//        match self.value {
-//            Some(v) => v,
-//            None => {
-//                let v = (self.calculation)(arg);
-//                self.value = Some(v);
-//                v
-//            },
-//        }
-//    }
-//}
-//
-//fn main() {
-//    let simulated_user_specified_value = 26;
-//    let simulated_random_number = 3;
-//
-//    generate_workout(
-//        simulated_user_specified_value,
-//        simulated_random_number
-//    );
-//}
-//
-//fn generate_workout(intensity: u32, random_number: u32) {
-//    let mut expensive_result = Cacher::new(|num| {
-//        println!("calculating slowly...");
-//        thread::sleep(Duration::from_secs(2));
-//        num
-//    });
-//
-//    if intensity < 25 {
-//        println!(
-//            "Today, do {} pushups!",
-//            expensive_result.value(intensity)
-//        );
-//        println!(
-//            "Next, do {} situps!",
-//            expensive_result.value(intensity)
-//        );
-//    }
-//    else {
-//        if random_number == 3 {
-//            println!("Take a break today! Remember to stay hydrated!");
-//        }
-//        else {
-//            println!(
-//                "Today, run for {} minutes!",
-//                expensive_result.value(intensity)
-//            );
-//        }
-//    }
-//}
-//
-
-
-
-
-fn main() {
-    let v1 = vec![1, 2, 3];
-    let v1_iter = v1.iter();
-
-    for val in v1_iter {
-        dbg!(val);
-    }
-}
-
-#[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);
-}
-
-#[test]
-fn iterator_sum() {
-    let v1 = vec![1, 2, 3];
-    let v1_iter = v1.iter();
-    let total: i32 = v1_iter.sum();
-    assert_eq!(total, 6);
-}
-
-#[test]
-fn iterator_map() {
-    let v1: Vec<i32> = vec![1, 2, 3];
-    let v2: Vec<_> = v1.iter().map(|x| x + 1).collect();
-    assert_eq!(v2, vec![2, 3, 4]);
-}
-
-
-
-#[derive(PartialEq, Debug)]
-struct Shoe {
-    size: i32,
-    style: String,
-}
-
-fn shoes_in_my_size(shoes: Vec<Shoe>, shoe_size: i32) -> Vec<Shoe> {
-    shoes.into_iter()
-        .filter(|s| s.size == shoe_size)
-        .collect()
-}
-
-#[test]
-fn filters_by_size() {
-    let shoes = vec![
-        Shoe { size: 10, style: String::from("sneaker") },
-        Shoe { size: 10, style: String::from("boot") },
-        Shoe { size: 13, style: String::from("sandal") },
-    ];
-
-    let in_my_size = shoes_in_my_size(shoes, 10);
-
-    assert_eq!(
-        in_my_size,
-        vec![
-            Shoe { size: 10, style: String::from("sneaker") },
-            Shoe { size: 10, style: String::from("boot") },
-        ]
-    );
-}
-
-struct Counter {
-    count: u32,
-}
-
-impl Counter {
-    fn new() -> Counter {
-        Counter { count: 0 }
-    }
-}
-
-impl Iterator for Counter {
-    type Item = u32;
-
-    fn next(&mut self) -> Option<Self::Item> {
-        self.count += 1;
-
-        if self.count < 6 {
-            Some(self.count)
-        }
-        else {
-            None
-        }
-    }
-}
-
-#[test]
-fn calling_next_directly() {
-    let mut counter = Counter::new();
-    assert_eq!(counter.next(), Some(1));
-    assert_eq!(counter.next(), Some(2));
-    assert_eq!(counter.next(), Some(3));
-    assert_eq!(counter.next(), Some(4));
-    assert_eq!(counter.next(), Some(5));
-    assert_eq!(counter.next(), None);
-}
-
-#[test]
-fn using_other_iterator_trait_methods() {
-    let sum: u32 = Counter::new().zip(Counter::new().skip(1))
-        .map(|(a, b)| a * b)
-        .filter(|x| x % 3 == 0)
-        .sum();
-    assert_eq!(18, sum);
-}
-- 
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