Weekly links for 2019-12-24
PEP 484 -- Type Hints
This PEP introduces a provisional module to provide these standard definitions and tools, along with some conventions for situations where annotations are not available
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cyrus-/relit: Hygienic typed literal macros (TLMs) for Reason
Reason, following OCaml, builds in literal notation for only a few common data structures, e.g. list literals like [x, y, z], array literals like [|x, y, z|], and JSX literals, which support an extension of HTML notation. This approach is unsatisfying because there are many other possible data structures for which literal notation might be useful, e.g. for finite maps, regular expressions, SQL queries, syntax tree representations, and chemical structures expressed using SMILES notation, to name just a few possibilities.