FastLED
3.10.8
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try_emplace()
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template<typename
Key
, typename T, typename
Hash
= Hash<Key>, typename KeyEqual = EqualTo<Key>, int INLINED_COUNT = FASTLED_HASHMAP_INLINED_COUNT>
template<typename... Args>
pair
<
iterator
, bool >
fl::unordered_map
<
Key
, T,
Hash
, KeyEqual, INLINED_COUNT >::try_emplace
(
Key
&&
k
,
Args &&...
args
)
inline
Definition at line
515
of file
unordered_map.h
.
515
{
516
const
bool
will_rehash
=
needs_rehash
();
517
if
(
will_rehash
) {
518
if
(
_tombstones
>
_size
) {
519
rehash_inline_no_resize
();
520
}
else
{
521
rehash_internal
(
_buckets
.size() * 2);
522
}
523
}
524
fl::size
idx
;
525
bool
is_new
;
526
fl::pair<fl::size, bool>
p
=
find_slot
(
k
);
527
idx
=
p
.first;
528
is_new
=
p
.second;
529
if
(
is_new
) {
530
// Key doesn't exist, construct in place with moved key
531
_buckets
[
idx
].key =
fl::move
(
k
);
532
_buckets
[
idx
].value =
T
(
fl::forward<Args>
(
args
)...);
533
mark_occupied
(
idx
);
534
++
_size
;
535
}
536
// If not new, key already exists - don't move key or construct value
537
return
{
iterator
(
this
,
idx
),
is_new
};
538
}
fl::unordered_map::rehash_internal
void rehash_internal(fl::size new_cap) FL_NO_EXCEPT
Definition
unordered_map.h:914
fl::unordered_map::needs_rehash
bool needs_rehash() const FL_NO_EXCEPT
Definition
unordered_map.h:319
fl::unordered_map::_buckets
fl::vector_inlined< Entry, INLINED_COUNT > _buckets
Definition
unordered_map.h:1045
fl::unordered_map::_size
fl::size _size
Definition
unordered_map.h:1046
fl::unordered_map::mark_occupied
void mark_occupied(fl::size idx) FL_NO_EXCEPT
Definition
unordered_map.h:816
fl::unordered_map::rehash_inline_no_resize
FL_DISABLE_WARNING_PUSH FL_DISABLE_WARNING_NULL_DEREFERENCE void rehash_inline_no_resize() FL_NO_EXCEPT
Definition
unordered_map.h:939
fl::unordered_map::find_slot
pair< fl::size, bool > find_slot(const Key &key) const FL_NO_EXCEPT
Definition
unordered_map.h:848
fl::unordered_map::_tombstones
fl::size _tombstones
Definition
unordered_map.h:1047
fl::unordered_map
Definition
unordered_map.h:59
fl::adl_barrier::move
constexpr remove_reference< T >::type && move(T &&t) FL_NO_EXCEPT
Definition
move.h:30
fl::unordered_map::iterator
Definition
unordered_map.h:188
fl
unordered_map
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