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package zstandard
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Zstd exposes multiple API flavors which can be used to transform strings into strings. The t type encodes the various ways to pass a string from the OCaml world to ZStd functions.
val from_string : ?pos:int -> ?len:int -> string -> tfrom_string ?pos ?len s will pass the content of s to Zstd functions. This incurs a copy of the OCaml string when from_string is called.
val from_bytes : ?pos:int -> ?len:int -> Core_kernel.Bytes.t -> tfrom_bytes ?pos ?len s will pass the content of s to Zstd functions. This incurs an allocation of a buffer of size len when calling from_bytes, and a copy of the ocaml bytes each time the resulting t is used by a compression / decompression function.
val from_bigstring : ?pos:int -> ?len:int -> Core_kernel.Bigstring.t -> tfrom_bigstring ?pos ?len s will pass the content of s between pos and pos+len to Zstd functions. This does not incur a copy.