add files

6 files changed, 147 insertions, 0 deletions

diff --git a/rust/theBook/chapter-10-generic-types-traits-lifetimes/generic-type/Cargo.toml b/rust/theBook/chapter-10-generic-types-traits-lifetimes/generic-type/Cargo.toml
new file mode 100644
index 0000000..8f1e556
--- /dev/null
+++ b/rust/theBook/chapter-10-generic-types-traits-lifetimes/generic-type/Cargo.toml
@@ -0,0 +1,8 @@
+[package]
+name = "generic-type"
+version = "0.1.0"
+edition = "2021"
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+[dependencies]
diff --git a/rust/theBook/chapter-10-generic-types-traits-lifetimes/generic-type/src/main.rs b/rust/theBook/chapter-10-generic-types-traits-lifetimes/generic-type/src/main.rs
new file mode 100644
index 0000000..8a3ef34
--- /dev/null
+++ b/rust/theBook/chapter-10-generic-types-traits-lifetimes/generic-type/src/main.rs
@@ -0,0 +1,45 @@
+#[derive(Debug)]
+struct Point<T, U> {
+    x: T,
+    y: U,
+}
+
+// T and U are declared for impl for it goes with struct
+impl<T, U> Point<T,U> {
+    fn new(value: T, v: U) -> Self {
+        Point {x: value, y: v}
+    }
+
+    // X1 and Y1 are only relavent to method mixup
+    fn mixup<X1, Y1>(self, other: Point<X1, Y1>) -> Point<T,Y1> {
+        Point {x: self.x, y: other.y}
+    }
+}
+
+fn largest<T: std::cmp::PartialOrd>(list: &[T]) -> &T {
+    let mut largest = &list[0];
+
+    for item in list {
+        if largest < item {
+            largest = item;
+        }
+    }
+    largest
+}
+
+fn main() {
+    let x = [1,3,5,7,9];
+    let y = ['a','b','c','d','e'];
+
+    let result = largest(&x);
+    println!("{result}");
+    
+    let result = largest(&y);
+    println!("{result}");
+
+    let result = Point::new(3.5,7);
+    println!("{},{}",result.x, result.y);
+
+    let result = result.mixup(Point::new("hello",'c'));
+    println!("{},{}",result.x, result.y);
+}
diff --git a/rust/theBook/chapter-10-generic-types-traits-lifetimes/non-generic-largest.rs b/rust/theBook/chapter-10-generic-types-traits-lifetimes/non-generic-largest.rs
new file mode 100644
index 0000000..149561e
--- /dev/null
+++ b/rust/theBook/chapter-10-generic-types-traits-lifetimes/non-generic-largest.rs
@@ -0,0 +1,34 @@
+fn largest_i32(list: &[i32]) -> &i32 {
+    let mut largest = &list[0];
+
+    for item in list {
+        if largest < item {
+            largest = item;
+        }
+    }
+
+    largest
+}
+
+fn largest_char(list: &[char]) -> &char {
+    let mut largest = &list[0];
+
+    for item in list {
+        if largest < item {
+            largest = item;
+        }
+    }
+
+    largest
+}
+
+fn main() {
+    let l1 = [1,3,5,7,9];
+
+    let l2 = ['a','b','c','d','e'];
+
+    let m1 = largest_i32(&l1);
+    let m2 = largest_char(&l2);
+
+    println!("{m1}, {m2}");
+}
diff --git a/rust/theBook/chapter-10-generic-types-traits-lifetimes/traits/Cargo.toml b/rust/theBook/chapter-10-generic-types-traits-lifetimes/traits/Cargo.toml
new file mode 100644
index 0000000..460f45f
--- /dev/null
+++ b/rust/theBook/chapter-10-generic-types-traits-lifetimes/traits/Cargo.toml
@@ -0,0 +1,8 @@
+[package]
+name = "traits"
+version = "0.1.0"
+edition = "2021"
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+[dependencies]
diff --git a/rust/theBook/chapter-10-generic-types-traits-lifetimes/traits/src/lib.rs b/rust/theBook/chapter-10-generic-types-traits-lifetimes/traits/src/lib.rs
new file mode 100644
index 0000000..45c93c8
--- /dev/null
+++ b/rust/theBook/chapter-10-generic-types-traits-lifetimes/traits/src/lib.rs
@@ -0,0 +1,29 @@
+pub trait Summary {
+    fn summarize (&self) -> String;
+}
+
+pub struct NewsArticle {
+    pub author: String,
+    pub headline: String,
+    pub location: String,
+    pub content: String,
+}
+
+impl Summary for NewsArticle {
+    fn summarize(&self) -> String {     // return String ownership. &self means self: &Self
+        format!("{} by {} ({})", self.headline, self.author, self.location)
+    }
+}
+
+pub struct Tweet {
+    pub username: String,
+    pub content: String,
+    pub retweet: bool,
+    pub reply: bool,
+}
+
+impl Summary for Tweet {
+    fn summarize(&self) -> String {     // &Self is the type owns impl
+        format!("{}: {}",self.username, self.content)
+    }
+}
diff --git a/rust/theBook/chapter-10-generic-types-traits-lifetimes/traits/src/main.rs b/rust/theBook/chapter-10-generic-types-traits-lifetimes/traits/src/main.rs
new file mode 100644
index 0000000..f0229a0
--- /dev/null
+++ b/rust/theBook/chapter-10-generic-types-traits-lifetimes/traits/src/main.rs
@@ -0,0 +1,23 @@
+use traits::{Tweet, Summary, NewsArticle};
+
+fn main() {
+    let tweet = Tweet {
+        username: String::from("horse_ebook"),
+        content: String::from(
+            "of course, as you probably already know, people."
+        ),
+        reply: false,
+        retweet: false,
+    };
+
+    println!("1 new tweet: {}", tweet.summarize());
+
+    let article = NewsArticle {
+        author: String::from("garhve"),
+        headline: String::from("how to die"),
+        location: String:: from("United Kingdom"),
+        content: String::from("This is how we gonna die"),
+    };
+
+    println!("1 new article: {}",article.summarize());
+}