可以使用TypeScript定义一个迭代器接口 // 迭代器接口interfaceIteratorInterface{next:()=>({value:any,done:boolean})}// 迭代器函数functioncreateInterator(arr:any[]):IteratorInterface{letindex=0;// 从索引为0 开始查询 数据letlen=arr.length;// 数组长度return{// 返回迭代器对象next(){returnindex<len?
// istream_iterator_char_type.cpp // compile with: /EHsc #include <iterator> #include <vector> #include <iostream> int main( ) { using namespace std; typedef istream_iterator<int>::char_type CHT1; typedef istream_iterator<int>::traits_type CHTR1; // Standard iterator interface for ...
另外,可以借助编辑器(如vscode)查看一下 TypeScript迭代器接口定义的源码: interface IteratorYieldResult<TYield> {done?: falsevalue: TYield}interface IteratorReturnResult<TReturn> {done: truevalue: TReturn}type IteratorResult<T, TReturn = any> = IteratorYieldResult<T> | IteratorReturnResult<TReturn>...
public interface Iterator { boolean hasNext(); Object next(); void remove(); } 依赖前两个方法就能完成遍历,典型的代码如下: for(Iterator it = c.iterator(); it.hasNext(); ) { Object o = it.next(); // 对o的操作... } 在JDK1.5中,还对上面的代码在语法上作了简化(但是限于只读,如果需...
(cout);// Standard iterator interface for writing// elements to the output streambuf:cout<<"The characters written to the output stream\n"<<" by charOutBuf are: "; *charOutBuf ='O'; charOutBuf++; *charOutBuf ='U'; charOutBuf++; *charOutBuf ='T'; charOutBuf++;cout<<"."<<...
An iterator method must declare aniterator interface typeas the return type. Theiterator interface typesare:IEnumerable,IEnumerable<T>,IEnumerator,IEnumerator<T>. Ayield returnstatement must include an expression to return as part of a sequence.yield return;isn't valid. ...
我们先来看下 Iterator 接口的定义。...(); } // 接口定义方式二 public interface Iterator { boolean hasNext(); E next(); } Iterator 接口有两种定义方式...(iterator.currentItem()); iterator.next(); } } } 在上面的代码实现中,我们需要将待遍历的容器对象,通过构造函数传递给迭代器类。... ite...
另外,可以借助编辑器(如vscode)查看一下 TypeScript 迭代器接口定义的源码: interfaceIteratorYieldResult<TYield>{done?:falsevalue:TYield}interfaceIteratorReturnResult<TReturn>{done:truevalue:TReturn}typeIteratorResult<T,TReturn=any>=IteratorYieldResult<T>|IteratorReturnResult<TReturn>interfaceIterator<T,TRet...
如果使用TypeScript的写法,遍历器接口(Iterable)、指针对象(Iterator)和next方法返回值的规格可以描述如下。 1interface Iterable{2[Symbol.iterator](): Iterator,3}45interface Iterator{6next(value?:any): IterationResult,7}89interface IterationResult{10value: any,11done:boolean,12} ...
如果使用 TypeScript 的写法,遍历器接口(Iterable)、指针对象(Iterator)和next方法返回值的规格可以描述如下。interface Iterable { [Symbol.iterator]() : Iterator, } interface Iterator { next(value?: any) : IterationResult, } interface IterationResult { value: any, done: boolean, } ...