pub fn encode_double(out: &mut Vec<u8>, v: f64)Expand description
,<value>\r\n — a double. inf / -inf / nan are valid wire
payloads per spec; we forward Rust’s standard float formatting which
emits exactly those tokens.
Vs RESP2’s $<len>\r\n<digits>\r\n shape this saves ~6 B per value
(no length prefix, no trailing CRLF after the digits — the digits
ARE the CRLF-terminated line). Worth it on ZSCORE flood or
ZRANGE WITHSCORES.