erlang_base62

A small, fast Base62 codec for Erlang. Accepts binaries, strings (lists of bytes), and integers as inputs; bin round-trips through itself, and other inputs are normalised to a binary internally.

Build

$ make

Simple Usage

encode

<<"MTA">> = base62:encode(10),
base62:encode(<<"10">>),
base62:encode("10").

decode

%% decode data to specified format , default format is binary
base62:decode(<<"MTA">>),
base62:decode("MTA"),
base62:decode(<<"MTA">>,string).
base62:decode("MTA",string).

Benchmarks

See BENCHMARK.md for full results. Summary: the optimized implementation is 2.6–2.8× faster at encoding and 1.9–2.3× faster at decoding compared to the legacy baseline.

Development

Common tasks are wrapped as just recipes. Run just (no args) to list them.

just build           # rebar3 compile
just test            # rebar3 ct (CT + PropEr)
just bench           # microbenchmark the current `base62` module
just bench-compare   # A/B against the frozen `bench/legacy` snapshot
just docs            # rebar3 edoc
just clean           # remove _build/ and the legacy beam