[#boost-urls-pct_string_view-decode]
= xref:boost.adoc[boost]::xref:boost/urls.adoc[urls]::xref:boost/urls/pct_string_view.adoc[pct_string_view]::decode
:relfileprefix: ../../../
:mrdocs:


Return the string with percent‐decoding

== Synopsis


Declared in `<https://www.github.com/boostorg/url/blob/develop/include/boost/url/pct_string_view.hpp#L334[boost/url/pct_string_view.hpp]>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
template<xref:boost/urls/string_token.adoc[string_token]::xref:boost/urls/string_token/StringToken.adoc[StringToken] StringToken = xref:boost/urls/string_token.adoc[string_token]::xref:boost/urls/string_token/return_string.adoc[return_string]>
StringToken::result_type
decode(
    xref:boost/urls/encoding_opts.adoc[encoding_opts] opt = {},
    StringToken&& token);
----

== Description


This function converts percent escapes        in the string into ordinary characters        and returns the result.        When called with no arguments, the        return type is `std::string`.        Otherwise, the return type and style        of output is determined by which string        token is passed.


=== Example

[,cpp]
----
assert( pct_string_view( "Program%20Files" ).decode() == "Program Files" );
----

=== Complexity

Linear in `this‐>size()`.


=== Exception Safety

Calls to allocate may throw.        String tokens may throw exceptions.



== Parameters


|===
| Name | Description

| *opt*
| The options for encoding. If        this parameter is omitted, the default        options are used.


| *token*
| An optional string token.        If this parameter is omitted, then        a new `std::string` is returned.        Otherwise, the function return type        is the result type of the token.


|===

== See Also


xref:boost/urls/encoding_opts.adoc[encoding_opts],            xref:boost/urls/string_token/return_string.adoc[string_token::return_string].






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