Data Format Standards: RFC 8259, YAML 1.2, CSV RFC 4180
Understand the official standards behind JSON (RFC 8259), YAML 1.2, and CSV (RFC 4180). Know what each mandates vs. what parsers typically allow.
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Tags: data, standards, formats
Data Format Standards: RFC 8259, YAML 1.2, CSV RFC 4180 Summarized Standards documents are long and dense. Most developers never read them — they read blog posts summarizing what some developer thought was in them. This article goes to the source for the three most important text-based data format standards, extracts the parts that actually affect your code, and explains the real-world implications. --- JSON: RFC 8259 (December 2017) RFC 8259 is the current JSON standard. It superseded RFC 7159, which superseded RFC 4627. The progression from 4627 → 7159 → 8259 represents a gradual clarification of edge cases, not radical changes. RFC 8259 is short — 16 pages. It's worth reading once. Here's what it actually says about the parts that trip up developers: Character Encoding RFC 8259 is…
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