Runtime Compilation
Runtime compilation is a programming technique where source code is compiled into executable machine code or bytecode during the execution of a program, rather than ahead of time. It enables dynamic code generation, optimization, and execution, often used in just-in-time (JIT) compilers, dynamic languages, and frameworks that require flexibility. This approach allows for adaptive performance improvements and on-the-fly code modifications based on runtime conditions.
Developers should learn runtime compilation for scenarios requiring high performance in dynamic environments, such as in JavaScript engines (e.g., V8), .NET's Common Language Runtime (CLR), or Java's HotSpot JVM, where JIT compilation optimizes code based on actual usage patterns. It's essential for building interpreters, virtual machines, or applications that need to generate or modify code at runtime, like in game engines, data processing pipelines, or scripting systems, to reduce startup times and adapt to changing workloads.