Implement and use "Rectangle" struct

3 files changed, 80 insertions, 0 deletions

diff --git a/rectangles/.gitignore b/rectangles/.gitignore
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+++ b/rectangles/.gitignore
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+
+# Created by https://www.toptal.com/developers/gitignore/api/rust
+# Edit at https://www.toptal.com/developers/gitignore?templates=rust
+
+### Rust ###
+# Generated by Cargo
+# will have compiled files and executables
+/target/
+
+# Remove Cargo.lock from gitignore if creating an executable, leave it for libraries
+# More information here https://doc.rust-lang.org/cargo/guide/cargo-toml-vs-cargo-lock.html
+Cargo.lock
+
+# These are backup files generated by rustfmt
+**/*.rs.bk
+
+# End of https://www.toptal.com/developers/gitignore/api/rust
+
diff --git a/rectangles/Cargo.toml b/rectangles/Cargo.toml
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+++ b/rectangles/Cargo.toml
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+[package]
+name = "rectangles"
+version = "0.1.0"
+authors = ["Jordan Gong <jordan.gong@protonmail.com>"]
+edition = "2018"
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+[dependencies]
diff --git a/rectangles/src/main.rs b/rectangles/src/main.rs
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+++ b/rectangles/src/main.rs
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+#[derive(Debug)]
+struct Rectangle {
+    width: u32,
+    height: u32,
+}
+
+impl Rectangle {
+    fn square(size: u32) -> Rectangle {
+        Rectangle {
+            width: size,
+            height: size,
+        }
+    }
+    fn area(&self) -> u32 {
+        self.width * self.height
+    }
+
+    fn can_hold(&self, other: &Rectangle) -> bool {
+        self.width > other.width && self.height > other.height
+    }
+}
+
+fn main() {
+    let rect1 = Rectangle {
+        width: 30,
+        height: 50,
+    };
+
+    println!(
+        "The area of the rectangle is {} square pixels.",
+        rect1.area()
+    );
+
+    let rect2 = Rectangle {
+        width: 10,
+        height: 40,
+    };
+
+    let rect3 = Rectangle {
+        width: 60,
+        height: 45,
+    };
+
+    println!("Can rect1 hold rect2? {}", rect1.can_hold(&rect2));
+    println!("Can rect1 hold rect3? {}", rect1.can_hold(&rect3));
+
+    let sqr = Rectangle::square(30);
+
+    println!(
+        "The area of the square is {} square pixels.",
+        sqr.area()
+    );
+}