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https://github.com/wpilibsuite/allwpilib
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80abf6bf24
The code now automatically resizes as required. This change also disconnects camera resolution settings from MJPEG stream connections; setting the camera resolution can now only be done via code.
39 lines
1.1 KiB
C++
39 lines
1.1 KiB
C++
// From: http://stackoverflow.com/questions/21028299/is-this-behavior-of-vectorresizesize-type-n-under-c11-and-boost-container
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// Credits: Casey and Howard Hinnant
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#ifndef DEFAULT_INIT_ALLOCATOR_H_
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#define DEFAULT_INIT_ALLOCATOR_H_
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#include <memory>
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namespace cs {
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// Allocator adaptor that interposes construct() calls to
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// convert value initialization into default initialization.
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template <typename T, typename A = std::allocator<T>>
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class default_init_allocator : public A {
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typedef std::allocator_traits<A> a_t;
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public:
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template <typename U>
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struct rebind {
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using other =
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default_init_allocator<U, typename a_t::template rebind_alloc<U>>;
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};
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using A::A;
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template <typename U>
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void construct(U* ptr) noexcept(
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std::is_nothrow_default_constructible<U>::value) {
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::new (static_cast<void*>(ptr)) U;
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}
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template <typename U, typename... Args>
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void construct(U* ptr, Args&&... args) {
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a_t::construct(static_cast<A&>(*this), ptr, std::forward<Args>(args)...);
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}
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};
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} // namespace cs
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#endif // DEFAULT_INIT_ALLOCATOR_H_
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