list的内存空间可以是不连续,它不支持随机访问, 因此list<int>::iterator则不支持“+”、“+=”、“<”等 vector<int>::iterator和list<int>::iterator都重载了“++”运算符。 总之,如果需要高效的随机存取,而不在乎插入和删除的效率,使用vector; 如果需要大量的插入和删除,而不关心随机存取,则应使用list。 (...
C++的一大组成部分是STL-standard template library。STL中有两个很重要的组成部分-container--比如vector,list,set,map等和algorithm--比如find(),sort(),replace(),merge()等。 container分为sequential container和associative container。vector和list就是两种不同类型的sequential container。两种类型是指:一个为连续...
STL中的container各有专长,最常用的是std::vector,可以完全取代array,第二常用的是std::list。std::vector的优点在于non-sequential access超快,新增数据于数据后端超快,但insert和erase任意资料则相当缓慢;std::list则是insert和erase速度超快,但non-sequential access超慢,此范例以实际时间比较vector和list间的优缺点。
缺失数据用大写NA表示,数据不确定用NaN表示,数据是无穷用Inf表示(一会全大写,一会大写加小写,一会首字母大写,真是醉了),判断是否为空数据用函数(),判断是否不确定用函数n(),数据是否有限用is.finite(),数据是否为无穷用函数is.infinite(): > z=c(1:3,Na);z Error: object 'Na' not found > z=c(1:...
void assign(size_type count, const Type& value); void assign(initializer_list<Type> init_list); template <class InputIterator> void assign(InputIterator first, InputIterator last); 매개 변수first 복사할 요소의 범위에서 첫 번째 요소의 위치입니다.la...
Home|Show Classes List|Index|Appendixes Language Reference only window.runtime propertywindow.runtime.__Global__.Vector InheritanceVectorObject Runtime Versions:1.5 The Vector class lets you access and manipulate a vector — an array whose elements all have the same data type. The data type of ...
Use list::remove STL function Use map STL functions Use PageHeap to detect memory errors Use priority_queue STL functions Use queue STL functions Use stack::top and stack::empty methods Use STL sqrt and pow functions Use string arrays
and are conceptuality similar to a list. These dynamic arrays are more complicated and less used in introduction to its compatriot list, which is dynamic by nature. Using C as the language of implementation this post will guide you through building a simple vector data-structure. The structure...
The iterators returned by this class's iterator and listIterator methods are fail-fast: if the vector is structurally modified at any time after the iterator is created, in any way except through the iterator's own remove or add methods, the iterator will throw a ConcurrentModificationException...
While this approach is not quite robust, it has the advantage of being relatively fast and easy to understand. If a different approach is required, the user can provide a custom class for all the methods or just for some specific calls. Table 1 List of functions implemented for each type ...