[#absl-HexStringToBytes-08]
= xref:absl.adoc[absl]::HexStringToBytes
:relfileprefix: ../
:mrdocs:

`HexStringToBytes` overloads

== Synopses

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

Converts an ASCII hex string into bytes, returning binary data of length `from.size()/2`. The input must be valid hexadecimal data, otherwise the return value is unspecified.


[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
[[deprecated("Use the HexStringToBytes() that returns a bool")]]
std::string
xref:absl/HexStringToBytes-02.adoc[HexStringToBytes](std::string_view from);
----

[.small]#xref:absl/HexStringToBytes-02.adoc[_» more..._]#

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.


[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
[[nodiscard]]
bool
xref:absl/HexStringToBytes-05.adoc[HexStringToBytes](
    std::string_view hex,
    std::string* bytes);
----

[.small]#xref:absl/HexStringToBytes-05.adoc[_» more..._]#

== Return Value

* The decoded binary data.
* `true` on success, `false` if `hex` is not valid hexadecimal data.

== Parameters

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


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