#include<memory>intmain() {autoData =std::unique_ptr<double,void(*)(void*)>{reinterpret_cast<double*>(malloc(sizeof(double) *50)), free };return0; } So, withstd::unique_ptr, you can quicklyhackRAII into legacy code. However, as a general guideline, prefer refactoring legacy code ...
typedefstd::unique_ptr<std::unordered_map<std::string, std::string>> UPtrMapSS; 而C++11中:usingUPtrMapSS = std::unique_ptr<std::unordered_map<std::string, std::string>>; 或许从这个例子中,我们是看不出来明显的好处的(而于我来说,以一个第三者的角度,这个例子也难以说服我一定要用C++11的usi...
typedefstd::unique_ptr<std::unordered_map<std::string,std::string>> UPtrMapSS; C++11中,提供了别名声明的语法来取代typedef: using UPtrMapSS =std::unique_ptr<std::unordered_map<std::string,std::string>>; 既然这两种语法都可以代表对一种类型的简写,那为什么一定要用using而不是typedef呢? 理由之一...
usingUPtrMapSS=std::unique_ptr<std::unordered_map<std::string,std::string>>; 1. 2. 3. 4. 或许从这个例子中,我们是看不出来明显的好处的(而于我来说,以一个第三者的角度,这个例子也难以说服我一定要用C++11的using)。 再来看下: typedefvoid(*FP) (int,conststd::string&); 1. 若不是特别熟...
length = simdutf::trim_partial_utf8(unicode, length); // Now we can transcode safely size_t budget_utf16 = simdutf::utf16_length_from_utf8(unicode, length); std::unique_ptr<char16_t[]> utf16{new char16_t[budget_utf16]}; size_t utf16words = simdutf::convert_utf8_to_utf16le...
5757 ms: std::basic_string<char>::basic_string (3597 times, avg 1 ms) 5541 ms: blender::CPPType::to_static_type_tag<float, blender::VecBase<float, ... (70 times, avg 79 ms) *** Template sets that took longest to instantiate: 32421 ms: std::unique_ptr<$> (30461 times, avg...
(*Add)(int,int,int);24Add Gadd=calc;25std::cout<<Gadd(1,2,3)<<std::endl;26//使用using别名来实现这么个功能27system("echo 使用using实现1~4累加");28using Func=int(*)(int,int,int,int);29Func func=calc;30std::cout<<func(1,2,3,4)<<std::endl;31std::cin.get();32return0;...
// Allocate string buffer using std::unique_ptrstd::unique_ptr<wchar_t[] > buffer(newwchar_t[bufferLength]); Or, using std::make_unique (available since C++14 and implemented in Visual Studio 2013): c++ autobuffer =std::make_unique<wchar_t[] >(bufferLength); ...
unique_ptr<nvinfer1::IBuilder, Destroy<nvinfer1::IBuilder>> builder{nvinfer1::createInferBuilder(gLogger)}; const auto explicitBatch = 1U << static_cast<uint32_t>(nvinfer1::NetworkDefinitionCreationFlag::kEXPLICIT_BATCH); unique_ptr<nvinfer1::INetworkDefinition, Destroy<nvinfer1::INetworkDefinit...
HRESULT STDMETHODCALLTYPE MyContentImageSource::UpdatesNeeded() { HRESULT hr = S_OK; try { ULONG drawingBoundsCount = 0; m_vsisNative->GetUpdateRectCount(&drawingBoundsCount); std::unique_ptr<RECT[]> drawingBounds(new RECT[drawingBoundsCount]); m_vsisNative->GetUpdateRects(drawingBounds.get...