若要删除std::vector中的element,正规的方式该用find() generic algorithm,若find()找到了,会传回该iterator,若找不到,将传回vector.end()。这种写法远比用for loop干净很多。 1 /* 2 (C) OOMusou 2006http://oomusou.cnblogs.com 3 4 Filename : Vec
std::vector::cbegin和std::vector::cend 这两个方法是与std::vector::begin和std::vector::end相对应的,从字面就能看出来,多了一个’c’,顾名思义就是const的意思。 所以: std::vector::cbegin:Returns a const_iterator pointing to the first element in the container. std::vector::cend:Returns a ...
//the inserted element that has the same value with a element existed is emitted copy(s1.begin(),s1.end(),ostream_iterator<int>(cout," ")); cout << endl << endl; pair<IntSet::iterator,bool> status = s1.insert(4); if(status.second) cout << "4 is inserted as element " << di...
CAutoVectorPtrElementTraits::INARGTYPE The data type to use for adding elements to the collection class object. CAutoVectorPtrElementTraits::OUTARGTYPE The data type to use for retrieving elements from the collection class object. Remarks This class provides methods, static functions, and typedef...
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#include "tbox/tbox.h" int main(int argc, char** argv) { if (!tb_init(tb_null, tb_null)) return 0; tb_vector_ref_t vector = tb_vector_init(0, tb_element_str(tb_true)); if (vector) { tb_vector_insert_tail(vector, "hello"); tb_vector_insert_tail(vector, "tbox"); tb_...
Vector2 Enum Value Summary Shape.Type com.huawei.hms.scene.math Overview Class Summary Box Degree Element Matrix3 Matrix4 Quaternion Radian Ray Transform Vector2 Vector3 Vector4 com.huawei.hms.scene.sdk Overview Class Summary ARView FaceView SceneView com.huawei...
-- Using processor's vector instructions (-march=native compiler flag set) ... 最后,让我们编译并比较时间: 代码语言:javascript 复制 $ cmake --build . $ ./linear-algebra-unoptimized result: -261.505 elapsed seconds: 1.97964 $ ./linear-algebra ...
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断言,是宏,而非函数。assert 宏的原型定义在<assert.h>(C)、<cassert>(C++)中,其作用是如果它的条件返回错误,则终止程序执行。可以通过定义NDEBUG来关闭 assert,但是需要在源代码的开头,include <assert.h>之前。 使用 代码语言:javascript 代码运行次数:0 ...