_2_iterator

README

迭代器模式

迭代器模式用于使用相同方式送代不同类型集合或者隐藏集合类型的具体实现。

可以使用迭代器模式使遍历同时应用迭代策略，如请求新对象、过滤、处理对象等。

Documentation

Index

• func IteratorPrint(i Iterator)
• type Aggregate
• type Iterator
• type Numbers
  • func NewNumbers(start, end int) *Numbers
  • func (n *Numbers) Iterator() Iterator
• type NumbersIterator
  • func (i *NumbersIterator) First()
  • func (i *NumbersIterator) IsDone() bool
  • func (i *NumbersIterator) Next() interface{}

Examples

• Iterator

Functions

func IteratorPrint

func IteratorPrint(i Iterator)

Types

type Aggregate

type Aggregate interface {
	Iterator() Iterator
}

type Iterator

type Iterator interface {
	First()
	IsDone() bool
	Next() interface{}
}

Example

var aggregate Aggregate
aggregate = NewNumbers(1, 10)

IteratorPrint(aggregate.Iterator())

Output:

1
2
3
4
5
6
7
8
9
10

type Numbers

type Numbers struct {
	// contains filtered or unexported fields
}

func NewNumbers

func NewNumbers(start, end int) *Numbers

func (*Numbers) Iterator

func (n *Numbers) Iterator() Iterator

type NumbersIterator

type NumbersIterator struct {
	// contains filtered or unexported fields
}

func (*NumbersIterator) First

func (i *NumbersIterator) First()

func (*NumbersIterator) IsDone

func (i *NumbersIterator) IsDone() bool

func (*NumbersIterator) Next

func (i *NumbersIterator) Next() interface{}