Add Option/Result combinators (#211)#292
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Ship 5 combinator functions (option_unwrap_or, option_map, option_and_then, result_unwrap_or, result_map) that eliminate 5-line match blocks for every fallible operation. Implementation: define as Vera source, inject into program AST via prelude, compile through existing monomorphization pipeline. Key compiler fixes for generic closures: - Monomorphizer infers type variables from AnonFn arguments - WASM call rewriter handles AnonFn against type alias FnType params - Generic type alias return type inference with substitution - Closure signature deduplication across functions Also renames map_option → option_map per #288 naming convention. Closes #211 Co-Authored-By: Claude <noreply@anthropic.invalid>
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Summary
option_unwrap_or,option_map,option_and_then,result_unwrap_or,result_mapmap_optiontooption_mapacross entire codebase per Built-in function naming consistency audit #288 naming conventionCloses #211
Test plan
pytest tests/ -v)mypy vera/)check_conformance.py)check_examples.py)Generated with Claude Code