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Show HN: A new language for COBOL workloads, built on Go

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Found: November 05, 2025
ID: 2282

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Show HN: A new language for COBOL workloads, built on Go We’re building an open-source language layer on top of Go, designed specifically for COBOL-style workloads: Native decimal arithmetic (COBOL-accurate) Record structures and copybook compatibility Batch jobs and transactional orchestration as first-class constructs Sequential / indexed file I/O baked into the runtime Compiles through Go for speed, concurrency, and cloud deployability Think of it as Kotlin for COBOL, or “COBOL on Go” familiar to mainframe engineers, powerful for modern developers.

Test Results so far: NIST COBOL-85 validation: 77.61% overall (305/393 tests) NC (Core COBOL): 97.89% (93/95) SM (Statements): 100% (13/13) RL (Relative I/O): 100% (26/26) IF (Intrinsic Functions): 100% (45/45) IC (CALL): 96% (24/25) Compliance tests: 100% passing Acceptance tests: 100% passing

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