Reflection (computer programming)

Historical background

The earliest computers were programmed in their native assembly language, which were inherently reflective as these original architectures could be programmed by defining instructions as data and using self-modifying code. As programming moved to compiled higher-level languages such as Algol, Cobol, and Fortran (but also Pascal and C and many other languages), this reflective ability largely disappeared until programming languages with reflection built into their type systems appeared.[ citation needed]

Brian Cantwell Smith's 1982 doctoral dissertation [2] [3] introduced the notion of computational reflection in procedural programming languages, and the notion of the meta-circular interpreter as a component of 3-Lisp.

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