File Extensions Mirror Country Codes: A Survey of Programming Languages

The article examines how certain programming language file extensions align with ISO country codes. It identifies extensions that directly match the two‑letter alpha‑2 format. The analysis covers multiple languages and their naming conventions. Examples include extensions that are identical to country abbreviations. The author highlights the coincidence between code and geography. Readers are shown how these overlaps can aid in learning or tooling. The post also notes any limitations or exceptions in the mapping. It concludes with suggestions for developers interested in naming conventions.