Metaprogramming

  1. Language-Specific Features and Idioms
    1. C++ Templates
      1. Template Metaprogramming (TMP)
        1. Compile-Time Computation
          1. Recursive Template Instantiation
            1. Template Specialization
              1. Constant Expression Evaluation
              2. Type Manipulation
                1. Type Deduction
                  1. Type Transformation
                  2. Template Instantiation Process
                    1. Two-Phase Lookup
                      1. Template Argument Deduction
                    2. Type Traits
                      1. Type Detection and Manipulation
                        1. Primary Type Categories
                          1. Type Properties
                          2. Standard Type Traits Library
                            1. Implementation Techniques
                              1. Custom Type Traits
                            2. SFINAE (Substitution Failure Is Not An Error)
                              1. Enabling/Disabling Functions Based on Types
                                1. Template Specialization
                                  1. Overload Resolution
                                  2. Concepts and Constraints (C++20)
                                    1. Defining Template Requirements
                                      1. Enforcing Type Constraints
                                        1. Concept Composition
                                        2. Variadic Templates
                                          1. Parameter Pack Expansion
                                            1. Recursive Template Patterns
                                          2. Python Metaprogramming
                                            1. Decorators
                                              1. Function Decorators
                                                1. Wrapper Functions
                                                  1. Parameterized Decorators
                                                  2. Class Decorators
                                                    1. Class Modification
                                                      1. Registration Patterns
                                                      2. Chaining and Stacking Decorators
                                                        1. Order of Application
                                                          1. Decorator Composition
                                                        2. Metaclasses
                                                          1. Customizing Class Creation
                                                            1. The `new` Method
                                                              1. The `init` Method
                                                              2. Use Cases for Metaclasses
                                                                1. Singleton Patterns
                                                                  1. Attribute Validation
                                                                  2. Metaclass Inheritance
                                                                    1. Multiple Metaclasses
                                                                      1. Metaclass Conflicts
                                                                    2. Dynamic Attribute Access
                                                                      1. `getattr` and `setattr`
                                                                        1. Attribute Resolution
                                                                          1. Default Values
                                                                          2. Overriding `getattr` and `setattr`
                                                                            1. Custom Attribute Behavior
                                                                              1. Proxy Objects
                                                                              2. Property Descriptors
                                                                                1. Data Descriptors
                                                                                  1. Non-Data Descriptors
                                                                                2. The `exec` and `eval` Functions
                                                                                  1. Dynamic Code Execution
                                                                                    1. Code Compilation
                                                                                      1. Namespace Management
                                                                                      2. Security Considerations
                                                                                        1. Code Injection Risks
                                                                                          1. Sandboxing Techniques
                                                                                        2. Import System Manipulation
                                                                                          1. Custom Import Hooks
                                                                                            1. Module Modification
                                                                                          2. Ruby Metaprogramming
                                                                                            1. Open Classes and Monkey Patching
                                                                                              1. Reopening Classes
                                                                                                1. Adding Methods
                                                                                                  1. Modifying Existing Methods
                                                                                                  2. Risks and Best Practices
                                                                                                    1. Namespace Pollution
                                                                                                      1. Version Compatibility
                                                                                                    2. `method_missing`
                                                                                                      1. Dynamic Method Handling
                                                                                                        1. Method Dispatch
                                                                                                          1. Fallback Mechanisms
                                                                                                          2. Use Cases and Pitfalls
                                                                                                            1. DSL Implementation
                                                                                                              1. Performance Implications
                                                                                                            2. Blocks, Procs, and Lambdas
                                                                                                              1. Passing Code as Data
                                                                                                                1. Closure Semantics
                                                                                                                  1. Variable Binding
                                                                                                                  2. Defining and Invoking Blocks
                                                                                                                    1. Block Parameters
                                                                                                                      1. Yield Statements
                                                                                                                    2. `define_method`
                                                                                                                      1. Creating Methods Dynamically
                                                                                                                        1. Method Definition at Runtime
                                                                                                                          1. Closure Capture
                                                                                                                          2. Use Cases in DSLs
                                                                                                                            1. Fluent Interfaces
                                                                                                                              1. Configuration Languages
                                                                                                                            2. Eigenclasses and Singleton Methods
                                                                                                                              1. Per-Object Behavior
                                                                                                                                1. Class Method Definition
                                                                                                                              2. Lisp Family (Common Lisp, Clojure, Scheme)
                                                                                                                                1. Macros and Code-as-Data (Homoiconicity)
                                                                                                                                  1. Macro Definition and Expansion
                                                                                                                                    1. Defmacro Syntax
                                                                                                                                      1. Macro Expansion Process
                                                                                                                                      2. Manipulating S-Expressions
                                                                                                                                        1. List Processing
                                                                                                                                          1. Symbol Manipulation
                                                                                                                                        2. Quasiquoting and Unquoting
                                                                                                                                          1. Syntax and Semantics
                                                                                                                                            1. Backquote Notation
                                                                                                                                              1. Comma and Comma-At
                                                                                                                                              2. Building Complex Code Structures
                                                                                                                                                1. Template Construction
                                                                                                                                                  1. Code Generation Patterns
                                                                                                                                                2. `eval`
                                                                                                                                                  1. Evaluating Code at Runtime
                                                                                                                                                    1. Environment Handling
                                                                                                                                                      1. Dynamic Compilation
                                                                                                                                                      2. Use Cases and Limitations
                                                                                                                                                        1. Interactive Programming
                                                                                                                                                          1. Performance Considerations
                                                                                                                                                        2. Reader Macros
                                                                                                                                                          1. Custom Syntax Extensions
                                                                                                                                                            1. Parse-Time Transformations
                                                                                                                                                          2. Java Metaprogramming
                                                                                                                                                            1. Reflection API
                                                                                                                                                              1. Inspecting Classes, Methods, and Fields
                                                                                                                                                                1. Class Loading
                                                                                                                                                                  1. Member Access
                                                                                                                                                                  2. Dynamic Invocation
                                                                                                                                                                    1. Method Invocation
                                                                                                                                                                      1. Constructor Invocation
                                                                                                                                                                      2. Security Considerations
                                                                                                                                                                        1. Access Control
                                                                                                                                                                          1. Security Managers
                                                                                                                                                                        2. Annotations and Annotation Processing
                                                                                                                                                                          1. Defining Custom Annotations
                                                                                                                                                                            1. Annotation Elements
                                                                                                                                                                              1. Retention Policies
                                                                                                                                                                              2. Processing Annotations at Compile-Time
                                                                                                                                                                                1. Annotation Processors
                                                                                                                                                                                  1. Code Generation
                                                                                                                                                                                  2. Runtime Annotation Processing
                                                                                                                                                                                    1. Reflection-Based Processing
                                                                                                                                                                                      1. Framework Integration
                                                                                                                                                                                    2. Bytecode Manipulation Libraries
                                                                                                                                                                                      1. ASM
                                                                                                                                                                                        1. Features and Use Cases
                                                                                                                                                                                          1. Visitor Pattern
                                                                                                                                                                                          2. Byte Buddy
                                                                                                                                                                                            1. Features and Use Cases
                                                                                                                                                                                              1. Agent-Based Modification
                                                                                                                                                                                              2. Javassist
                                                                                                                                                                                                1. Features and Use Cases
                                                                                                                                                                                                  1. Source-Level API
                                                                                                                                                                                                2. Dynamic Proxies
                                                                                                                                                                                                  1. Creating Proxy Classes at Runtime
                                                                                                                                                                                                    1. InvocationHandler Interface
                                                                                                                                                                                                      1. Proxy Generation
                                                                                                                                                                                                      2. Use Cases in Frameworks
                                                                                                                                                                                                        1. AOP Implementation
                                                                                                                                                                                                          1. Remote Procedure Calls
                                                                                                                                                                                                        2. Class Loading and Generation
                                                                                                                                                                                                          1. Custom Class Loaders
                                                                                                                                                                                                            1. Runtime Class Generation
                                                                                                                                                                                                          2. C# Metaprogramming
                                                                                                                                                                                                            1. Reflection and Attributes
                                                                                                                                                                                                              1. Inspecting Types and Members
                                                                                                                                                                                                                1. Type Discovery
                                                                                                                                                                                                                  1. Member Enumeration
                                                                                                                                                                                                                  2. Defining and Using Attributes
                                                                                                                                                                                                                    1. Attribute Classes
                                                                                                                                                                                                                      1. Attribute Targets
                                                                                                                                                                                                                      2. Dynamic Method Invocation
                                                                                                                                                                                                                        1. MethodInfo Usage
                                                                                                                                                                                                                          1. Parameter Binding
                                                                                                                                                                                                                        2. Expression Trees
                                                                                                                                                                                                                          1. Building and Compiling Expressions
                                                                                                                                                                                                                            1. Expression Construction
                                                                                                                                                                                                                              1. Lambda Compilation
                                                                                                                                                                                                                              2. Use in LINQ and Dynamic Queries
                                                                                                                                                                                                                                1. Query Translation
                                                                                                                                                                                                                                  1. Provider Patterns
                                                                                                                                                                                                                                2. Source Generators
                                                                                                                                                                                                                                  1. Generating Code at Compile-Time
                                                                                                                                                                                                                                    1. Generator Implementation
                                                                                                                                                                                                                                      1. Incremental Generation
                                                                                                                                                                                                                                      2. Integration with Build Tools
                                                                                                                                                                                                                                        1. MSBuild Integration
                                                                                                                                                                                                                                          1. IDE Support
                                                                                                                                                                                                                                        2. IL Weaving
                                                                                                                                                                                                                                          1. Modifying Intermediate Language Code
                                                                                                                                                                                                                                            1. IL Instruction Manipulation
                                                                                                                                                                                                                                              1. Method Body Modification
                                                                                                                                                                                                                                              2. Tools and Frameworks
                                                                                                                                                                                                                                                1. PostSharp
                                                                                                                                                                                                                                                  1. Fody
                                                                                                                                                                                                                                                2. Dynamic Language Runtime (DLR)
                                                                                                                                                                                                                                                  1. Dynamic Object Protocol
                                                                                                                                                                                                                                                    1. Language Interoperability

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                                                                                                                                                                                                                                                3. Core Techniques and Mechanisms

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                                                                                                                                                                                                                                                5. Metaprogramming Paradigms and Patterns