[#bsl-map-0c7-try_emplace-06]
= xref:bsl.adoc[bsl]::xref:bsl/map-0c7.adoc[map<int, pair<shared_ptr<Statistics>, shared_ptr<Collector<OsLinux>>>>]::try_emplace
:relfileprefix: ../../
:mrdocs:

`try_emplace` overloads

== Synopses

Declared in `<bslstl_map.h>`

Same as the preceding `try_emplace` overload, for movable keys.


[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
template<class... Args>
xref:bsl/pair-0b.adoc[pair<iterator, bool>]
xref:bsl/map-0c7/try_emplace-0c.adoc[try_emplace](
    xref:BloombergLP/bslmf/MovableRef.adoc[BloombergLP::bslmf::MovableRef<int>] key,
    Args&&... args);
----

[.small]#xref:bsl/map-0c7/try_emplace-0c.adoc[_» more..._]#

If a key equivalent to the specified `key` already exists in this map, return a pair containing an iterator referring to the existing item and `false`. Otherwise, insert into this map a newly‐created entry constructed from `key` and the specified `args`, and return a pair containing an iterator referring to the newly‐created entry and `true`. This method requires that the (template parameter) types `KEY` and `VALUE` are `emplace‐constructible` from `key` and `args` respectively. For C++03, `VALUE` must also be `copy‐constructible`.


[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
template<class... Args>
xref:bsl/pair-0b.adoc[pair<iterator, bool>]
xref:bsl/map-0c7/try_emplace-01.adoc[try_emplace](
    int const& key,
    Args&&... args);
----

[.small]#xref:bsl/map-0c7/try_emplace-01.adoc[_» more..._]#

If a key equivalent to the specified `key` already exists in this map, return a pair containing an iterator referring to the existing item and `false`. Otherwise, insert into this map a newly‐created entry constructed from `key` and the specified `args`, and return a pair containing an iterator referring to the newly‐created entry and `true`. This overload participates in overload resolution only when `LOOKUP_KEY` is a transparent lookup key for `COMPARATOR`.


[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
template<
    class LOOKUP_KEY,
    class... Args>
xref:bsl/pair-0b.adoc[pair<iterator, bool>]
xref:bsl/map-0c7/try_emplace-0b.adoc[try_emplace](
    LOOKUP_KEY&& key,
    Args&&... args)
requires BloombergLP::bslmf::IsTransparentPredicate<COMPARATOR,
                                                   LOOKUP_KEY>::value &&
        !bsl::is_convertible<LOOKUP_KEY&&, const_iterator>::value &&
        !bsl::is_convertible<LOOKUP_KEY&&, iterator>::value;
----

[.small]#xref:bsl/map-0c7/try_emplace-0b.adoc[_» more..._]#

Insert at the specified `hint` using a movable `key` and the specified constructor `args`, or return an iterator to an existing entry.


[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
template<class... Args>
xref:bsl/map-0c7/iterator.adoc[iterator]
xref:bsl/map-0c7/try_emplace-085.adoc[try_emplace](
    xref:bsl/map-0c7/const_iterator.adoc[const_iterator] hint,
    xref:BloombergLP/bslmf/MovableRef.adoc[BloombergLP::bslmf::MovableRef<int>] key,
    Args&&... args);
----

[.small]#xref:bsl/map-0c7/try_emplace-085.adoc[_» more..._]#

If a key equivalent to the specified `key` already exists in this map, return an iterator referring to the existing item. Otherwise, insert into this map a newly‐created `value_type` object, constructed from from `key` and the specified `args`, and return an iterator referring to the newly‐created entry. Use the specified `hint` as a starting point for checking to see if the key already in the map. This method requires that the (template parameter) types `KEY` and `VALUE` are `emplace‐constructible` from `key` and `args` respectively. For C++03, `VALUE` must also be `copy‐constructible`.


[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
template<class... Args>
xref:bsl/map-0c7/iterator.adoc[iterator]
xref:bsl/map-0c7/try_emplace-086.adoc[try_emplace](
    xref:bsl/map-0c7/const_iterator.adoc[const_iterator] hint,
    int const& key,
    Args&&... args);
----

[.small]#xref:bsl/map-0c7/try_emplace-086.adoc[_» more..._]#

Insert at the specified `hint` using the transparent `LOOKUP_KEY` and the specified constructor `args`, or return an iterator to an existing entry.


[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
template<
    class LOOKUP_KEY,
    class... Args>
xref:bsl/map-0c7/iterator.adoc[iterator]
xref:bsl/map-0c7/try_emplace-05.adoc[try_emplace](
    xref:bsl/map-0c7/const_iterator.adoc[const_iterator] hint,
    LOOKUP_KEY&& key,
    Args&&... args)
requires BloombergLP::bslmf::IsTransparentPredicate<COMPARATOR,
                                                   LOOKUP_KEY>::value;
----

[.small]#xref:bsl/map-0c7/try_emplace-05.adoc[_» more..._]#


[.small]#Created with https://www.mrdocs.com[MrDocs]#