[#boost-urls-grammar-recycled_ptr-2constructor-05e]
= xref:boost.adoc[boost]::xref:boost/urls.adoc[urls]::xref:boost/urls/grammar.adoc[grammar]::xref:boost/urls/grammar/recycled_ptr.adoc[recycled_ptr]::recycled_ptr
:relfileprefix: ../../../../
:mrdocs:


Constructor

== Synopsis


Declared in `<https://www.github.com/boostorg/url/blob/develop/include/boost/url/grammar/recycled.hpp#L300[boost/url/grammar/recycled.hpp]>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
recycled_ptr(std::nullptr_t) noexcept;
----

== Description


After construction, this is empty        and refers to a global recycle bin.


=== Example

[,cpp]
----
recycled_ptr< std::string > ps( nullptr );

// Acquire a string and put it into a known state
ps->acquire();
ps->clear();
----

=== Postconditions

[,cpp]
----
&this->bin() != nullptr && this->empty()
----

=== Exception Safety

Throws nothing&period;



== See Also


xref:boost/urls/grammar/recycled_ptr/acquire.adoc[acquire],            xref:boost/urls/grammar/recycled.adoc[recycled],            xref:boost/urls/grammar/recycled_ptr/release.adoc[release]&period;






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