Rust Loops

🦀 Rust Loops

• loop (infinite loop)

• while (condition-based)

• for (iterator-based, most common)

Rust loops are safe, expressive, and strict.

 1. loop (Infinite Loop)

Runs forever until you stop it using break.

✔ Useful for servers, games, event listeners

 2. loop with Return Value

loop can return a value using break.

3. while Loop

Runs while a condition is true.

✔ Best when loop count is unknown

 4. for Loop (Most Used)

Used to iterate over ranges, arrays, and collections.

▶️ Using range

• 1..5 → 1 to 4

• 1..=5 → 1 to 5

▶️ Looping through array

✔ Safer than index-based loops

 5. break and continue

▶️ break – exit loop

▶️ continue – skip iteration

 6. Nested Loops

 7. Loop Labels (Advanced but Powerful)

Used to break outer loops.

 8. while let Loop

Used mainly with Option or Result.

🔑 Loop Comparison

🧠 Important Rules

• Conditions must be bool

• for loops are safest & preferred

• No classic for(i=0;i<n;i++) like C

• Compiler prevents out-of-bounds errors