Match Feature Example

Assets/Lectures/RL5.md

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+# 20CYS312 - Principles of Programming Languages
+![](https://img.shields.io/badge/Batch-21CYS-lightgreen) ![](https://img.shields.io/badge/UG-blue) ![](https://img.shields.io/badge/Subject-PPL-blue) <br/>
+![](https://img.shields.io/badge/Lecture-2-orange) ![](https://img.shields.io/badge/Practical-3-orange) ![](https://img.shields.io/badge/Credits-3-orange)
+
+## Lecture 5 - Misc
+![](https://img.shields.io/badge/-8th_May-orange)
+
+```
+fn main() {
+    let number = 13;
+    // TODO ^ Try different values for `number`
+
+     
+    match number {
+        // Match a single value
+        1 => println!("One!"),
+        // Match several values
+        2 | 3 | 5 | 7 | 11 => println!("This is a prime"),
+        // TODO ^ Try adding 13 to the list of prime values
+        // Match an inclusive range
+        13..=19 => println!("A teen"),
+        // Handle the rest of cases
+        _ => println!("Ain't special"),
+        // TODO ^ Try commenting out this catch-all arm
+    }
+
+    let boolean = true;
+    // Match is an expression too
+    let binary = match boolean {
+        // The arms of a match must cover all the possible values
+        false => 0,
+        true => 1,
+        // TODO ^ Try commenting out one of these arms
+    };
+
+    println!("{} -> {}", boolean, binary);
+}
+```