Meta-Programming and Macro capabilities of...

Meta-programming = the broad idea of “programs that manipulate or generate programs”. It can happen at runtime (reflection) or compile-time (macros). Macros = one specific style of meta-programming, usually tied to transforming syntax at compile time (in a pre-processor or AST-transformer). It takes a piece of code as input and replaces it with another piece of code as output, often based on patterns or parameters. Rule‑based transformation: A macro is specified as a pattern (e.g., a template, a