1. 引入 先看一个情况,在C语言中,如果我们想要实现一个可变形参的函数,那么应该这么做: 这里函数必须声明称C调用约定,至于原因,跟栈平衡恢复有关,这里不细讲。 当然在C++中,也可以使用这种情况,不过C++可以使用另外一种技术实现,就是initializer_list,下面我们看一下这种技术的基本使用和原理。 2. initializer_li...
vector<int> arr = {1,2,3,4,5}; 或者 vector<int> arr{1,2,3,4,5}; 右边那个花括号返回的类型便是initialize_list 我们可以在自己的类中这么用 classfoo {public: std::vector<int>data;//构造函数里放上initialize_listfoo() {} foo(std::initializer_list<int>list) :data(list) {}voidprint...
配置(configure):设置运行参数而不涉及初始赋值 该术语在技术文档中常与'initialization vector'(初始化向量)、'lazy initialization'(延迟初始化)等专业词组配合使用,读音为/ɪˈnɪʃəlaɪz/。理解其在不同语境中的具体含义,对于准确进行技术交流具有重要意义。
Filter state, specified as a real-valued M-element vector, where M is the size of the filter state. Example: [200; 0.2] Data Types: double statecov— State estimation error covariance positive-definite real-valued M-by-M matrix State estimation error covariance, specified as a positive-defin...
python-can interface/s (if applicable): vector VN1610 dongle, driver version 20.30.14 Traceback (most recent call last): File "c:\users\documents\hengelo-qlab\dccb_daimler\tests\test_vector.py", line 89, in <module> canbus = can.Bus( File "C:\Users\Documents\hengelo-qlab\dccb_daimler...
[INFO] GE(12328,python):2024-07-31-09:33:53.260.502 [dnnengine_manager.cc:128][EVENT]12328 Initialize:[GEPERFTRACE] The time cost of DNNEngineManager::Initialize[VectorEngine] is [0] micro second. [INFO] GE(12328,python):2024-07-31-09:33:53.260.505 [dnnengine_manager.cc:128][EVENT...
Error_2_The type or namespace name 'Vector2' could not be found (are you missing a using directive or an assembly reference?)_ Error_96_The type or namespace name 'Button' could not be found (are you missing a using directive or an assembly reference?)_ Error: An object reference is...
还有就是当以initialize_list为参数的时候,要判断实际的函数调用过程: std::vector<int> vi(10);//case A : 10 unintialized elements std::vector<int> vi({10});// case B: 1 element set to 10 std::vector<double> payments{45.99, 39.23, 10.11};...
string: labels of basis states of the Pauli eigenstates Z, X, Y. SeeStatevector.from_label(). Notice the order of the labels is reversed with respect to the qubit index to be applied to. Example label ‘01’ initializes the qubit zero to∣1⟩|1\rangle∣1⟩and the qubit one to...
normalize (bool)– Whether to normalize an input array to a unit vector.Attributes base_class Get the base class of this instruction. This is guaranteed to be in the inheritance tree of self. The “base class” of an instruction is the lowest class in its inheritance tree that the object...