Runtime Evaluation
Runtime evaluation is a programming concept where code is executed dynamically during the execution of a program, rather than at compile time. It allows programs to interpret and execute code strings or expressions on-the-fly, enabling features like dynamic scripting, configuration, and metaprogramming. This is commonly implemented through functions like eval() in languages such as JavaScript, Python, and Ruby.
Developers should learn runtime evaluation for tasks requiring dynamic behavior, such as building interpreters, implementing domain-specific languages (DSLs), or creating flexible configuration systems. It's essential in scenarios where code needs to be generated or modified based on user input or runtime conditions, but must be used cautiously due to security risks like code injection.