本文整理汇总了C++中DataVector::at方法的典型用法代码示例。如果您正苦于以下问题：C++ DataVector::at方法的具体用法？C++ DataVector::at怎么用？C++ DataVector::at使用的例子？那么, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类DataVector的用法示例。
在下文中一共展示了DataVector::at方法的3个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C++代码示例。
示例1: main
int main(int argc, char *argv[])
{
struct shm_remove
{
shm_remove() { boost::interprocess::shared_memory_object::remove("MySharedMemory"); }
~shm_remove(){ boost::interprocess::shared_memory_object::remove("MySharedMemory"); }
} remover;
boost::interprocess::managed_shared_memory segment(boost::interprocess::create_only, "MySharedMemory", 65536);
const ShmemAllocator alloc_inst (segment.get_segment_manager());
DataVector *myvector = segment.construct<DataVector>("MyVector")(alloc_inst);
for(int i = 0; i < 6; ++i) { //Insert data in the vector
printf("%d ", i);
myvector->push_back(i*3);
}
while(1)
{
for(int i = 0; i < 6; ++i) { //Insert data in the vector
printf("%d ", i);
myvector->at(i) = rand()*rand();
printf("%f ", myvector->at(i));
}
printf("\n");
}
return 0;
};示例2: test_datavector
/**
* Test DataVector
*/
void test_datavector()
{
DataVector src;
src.push_back(DataPoint(1,true));
src.push_back(DataPoint(2,true));
src.push_back(DataPoint(3,true));
std::vector<bool> mask(3,true);
DataVector dst;
dst.copy(src,mask);
ASSERT_EQUAL(dst.at(0).value, 1, "DataVector::copy value failed on enabled data point at 0");
ASSERT(dst.at(0).active, "DataVector::copy active failed on enabled data point at 0");
ASSERT_EQUAL(dst.at(1).value, 2, "DataVector::copy value failed on enabled data point at 1");
ASSERT(dst.at(1).active, "DataVector::copy active failed on enabled data point at 1");
ASSERT_EQUAL(dst.at(2).value, 3, "DataVector::copy value failed on enabled data point at 2");
ASSERT(dst.at(2).active, "DataVector::copy active failed on enabled data point at 2");
src.deactivate();
dst.clear();
dst.copy(src,mask);
ASSERT_EXCEPTION(dst.at(0), "DataVector::copy failed on disabled data point at 0");
ASSERT_EXCEPTION(dst.at(1), "DataVector::copy failed on disabled data point at 1");
ASSERT_EXCEPTION(dst.at(2), "DataVector::copy failed on disabled data point at 2");
}示例3: main
int main(int argc, char *argv[])
{
boost::interprocess::managed_shared_memory segment(boost::interprocess::open_only, "MySharedMemory");
DataVector *myvector = segment.find<DataVector>("MyVector").first;
for(int i = 0; i < 100; ++i) //Insert data in the vector
{
printf("%f ", (float)myvector->at(i));
}
return 0;
};