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Minor documentation update for noinit_adaptor

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Glen Fernandes
2019-05-03 19:53:56 -04:00
parent 8f5f7f9c42
commit a90dc39e06
1 changed files with 21 additions and 1 deletions
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doc/noinit_adaptor.qbk
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@ -23,7 +23,7 @@ and whose `destroy(ptr)` invokes `value_type` destructor directly.
[endsect]
[section Example]
[section Examples]
The following example shows use of this allocator adaptor to achieve default
initialization of elements of a trivial type, which are later assigned values.
@ -31,6 +31,7 @@ initialization of elements of a trivial type, which are later assigned values.
```
#include <boost/core/noinit_adaptor.hpp>
#include <numeric>
#include <vector>
int main()
{
@ -39,6 +40,25 @@ int main()
}
```
The `allocate_shared_noinit` function templates are now implemented simply
using `allocate_shared` with `noinit_adaptor`.
```
template<class T, class A>
enable_if_t<is_unbounded_array_v<T>, shared_ptr<T> >
allocate_shared_noinit(const A& a, size_t n)
{
return allocate_shared<T>(boost::noinit_adapt(a), n);
}
template<class T, class A>
enable_if_t<!is_unbounded_array_v<T>, shared_ptr<T> >
allocate_shared_noinit(const A& a)
{
return allocate_shared<T>(boost::noinit_adapt(a));
}
```
[endsect]
[section Reference]