Kefu Chai a606606ac4 bytes: implement formatting helpers using formatter ...

some of these helpers prints a byte array using `to_hex()`, which
materializes a string instance and then drop it on the floor after
printing it to the given ostream. this hurts the performance, so
`fmt::print()` should be more performant in comparison to the
implementations based on `to_hex()`.

Refs #13245

Signed-off-by: Kefu Chai <kefu.chai@scylladb.com>

2023-03-27 20:06:45 +08:00

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