4. Function overloads and templates

This section focuses on C++ extensions to simple functions, especially overloaded functions and function templates.

• 4.1. Function overloads
  • 4.1.1. Overloading anti-patterns
• 4.2. Operator overloads
  • 4.2.1. Relational operators
  • 4.2.2. Insertion and extraction overloads
• 4.3. Function templates
  • 4.3.1. Using templated functions
  • 4.3.2. Multiple template parameters
  • 4.3.3. Non-generic template parameters
• 4.4. Concepts overview
  • 4.4.1. Concepts
  • 4.4.2. Keyword: requires
• 4.5. Trailing return types
  • 4.5.1. Keyword: decltype
  • 4.5.2. Trailing return type syntax
• 4.6. General function writing guidelines
  • 4.6.1. When to write a function
  • 4.6.2. Example: number guessing

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