[#absl-HexStringToBytes-05]
= xref:absl.adoc[absl]::HexStringToBytes
:relfileprefix: ../
:mrdocs:

Converts the hexadecimal encoded data in `hex` into raw bytes in the `bytes` output string. If `hex` does not consist of valid hexadecimal data, this function returns false and leaves `bytes` in an unspecified state. Returns true on success.

== Synopsis

Declared in `<absl/strings/escaping.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
[[nodiscard]]
bool
HexStringToBytes(
    std::string_view hex,
    std::string* bytes);
----

== Return Value

`true` on success, `false` if `hex` is not valid hexadecimal data.

[NOTE]
====
The return value https://en.cppreference.com/cpp/language/attributes/nodiscard[should not be discarded^].
====
== Parameters

[cols="1,4"]
|===
| Name| Description
| *hex*
| The hexadecimal‐encoded string to decode.
| *bytes*
| The output string that receives the decoded bytes.
|===


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