“A modern formatting library for C++”
summary
A modern C++ formatting library (fmt) implements a Python-like brace syntax and a std proposal P0645R0, uses variadic templates plus a compact type-erasure arg store and a buffer abstraction with a single virtual grow, and exposes format/format_to APIs and a formatter<T> parse/format extension model. Benchmarks show 6x compile-time improvement and order-of-magnitude smaller binaries versus Folly-style templates, runtime costs are within 10% of printf (faster than iostreams), floating-point still falls back to sprintf but plans include Grisu/double-conversion replacements.
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chapters (10)
- 0:00Introduction
- 1:31Problems with printf
- 10:55Extensibility issues
- 12:25iostreams limitations
- 21:40Existing formatting libraries
- 25:20Proposed modern solution
- 38:36Implementation details
- 43:11Benchmarking results
- 53:08Library history and adoption
- 55:20Q&A session
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