11. What’s Your Function

• 11.1. Introduction
  • 11.1.1. Check Your Understanding
• 11.2. Calling Functions
  • 11.2.1. Making a Function Run
• 11.3. Defining Our Own Functions
  • 11.3.1. Function Syntax
    • 11.3.1.1. Naming Functions
  • 11.3.2. Function Code
  • 11.3.3. Defining vs. Calling
  • 11.3.4. Check Your Understanding
• 11.4. Function Input
  • 11.4.1. Arguments and Parameters
  • 11.4.2. Mismatched Arguments and Parameters
  • 11.4.3. Default Parameter Values
  • 11.4.4. Check Your Understanding
• 11.5. Function Output
  • 11.5.1. Return Statements
    • 11.5.1.1. Returning a Value
    • 11.5.1.2. return Terminates Function Execution
    • 11.5.1.3. Boolean Functions
  • 11.5.2. Check Your Understanding
• 11.6. A Good Function-Writing Process
  • 11.6.1. Step 1: Design Your Function
  • 11.6.2. Step 2: Create the Basic Structure
  • 11.6.3. Step 3: Write the Body
• 11.7. Parameters and Variables
  • 11.7.1. Function Scope
  • 11.7.2. Variable Shadowing
  • 11.7.3. Check Your Understanding
• 11.8. Functions Calling Other Functions
  • 11.8.1. Functions Should Do Exactly One Thing
• 11.9. Why Create Functions?
  • 11.9.1. Functions Reduce Repetition
  • 11.9.2. Functions Make Your Code More Readable
  • 11.9.3. Functions Reduce Complexity
  • 11.9.4. Functions Enable Code Sharing
  • 11.9.5. Functions Save Millions of Lives Every Day
• 11.10. Exercises: Functions
  • 11.10.1. Getting Started
  • 11.10.2. Part 1: Rectangles
  • 11.10.3. Part 2: Triangles
  • 11.10.4. Part 3: Diamonds
  • 11.10.5. Optional Mission
  • 11.10.6. Submitting Your Work
• 11.11. Studio: Functions
  • 11.11.1. Before You Start
  • 11.11.2. Reverse Characters
  • 11.11.3. Reverse Digits
  • 11.11.4. Complete Reversal
  • 11.11.5. Bonus Missions
  • 11.11.6. Submitting Your Work