每个人都抨击Qt容器,但是例如QList有removeOne()方法,与std::vector的丑陋相比,这几乎是不费吹灰之力的。 - Richard W 显示剩余6条评论 458 std::vector 的erase 方法是重载的,所以最好调用时更清晰一些。 vec.erase(vec.begin() + index); 当你只想删除一个元素时。 - CodeBuddy 4 无论有多少...
{std::stringvertex1, vertex2, vertex3;unsignedintvertex_index[3], uv_index[3], normal_index[3];intmatches =fscanf(file,"%d/%d/%d %d/%d/%d %d/%d/%d\n", &vertex_index[0], &uv_index[0], &normal_index[0], &vertex_index[1], &uv_index[1], &normal_index[1], &vertex_index[...
{ String **strPtr = (String**)vector_at(vec, index); string_push_back(*strPtr, '\n'); string_concatenate(concat, *strPtr); } for (size_t index = 0; index < 5; index++) { string_deallocate(fruits[index]); } vector_deallocate(vec); clock_gettime(CLOCK_MONOTONIC, &end); ...
However, it doesn’t check for out-of-bounds errors. If you access an index that’s outside the vector’s size, it leads to undefined behavior. Usingat() Theat()member function provides a safer way to access elements by checking the provided index against the vector’s size. intvalue=...
1)Removes the element atpos. 2)Removes the elements in the range[first,last). Iterators (including theend()iterator) and references to the elements at or after the point of the erase are invalidated. The iteratorposmust be valid and dereferenceable. Thus theend()iterator (which is valid, ...
Vector is a sequential container to store elements and not index based. Array stores a fixed-size sequential collection of elements of the same type and it is index based. Vector is dynamic in nature so, size increases with insertion of elements. As array is fixed size, once initialized can...
// fill vMyIndexes, take care about duplicated values vMyIndexes.push_back(-1); // to handle range from 0 to the first index to remove vMyIndexes.push_back(vMyValues.size()); // to handle range from the last index to remove and to the end of values std::sort(vMyIndexes.begin...
index 03794d8ebd8..296ba33bba8 100644 --- a/libstdc++-v3/testsuite/23_containers/vector/bool/cons/noexcept_move_construct.cc +++ b/libstdc++-v3/testsuite/23_containers/vector/bool/cons/noexcept_move_construct.cc @@ -23,4 +23,34 @@ ...