go知识重新整理

Go/DesignPattern/Iterator/iterator.go

@@ -0,0 +1,67 @@
+package iterator
+
+import "fmt"
+
+//迭代器模式：使用相同的方式 迭代不同类型的集合 或者隐藏集合类型的具体实现
+
+//聚合
+type Aggregate interface {
+	Iterator() Iterator
+}
+
+type Iterator interface {
+	First()
+	IsDone() bool
+	Next() interface{}
+}
+
+//NewNumbers
+func NewNumbers(start, end int) *Numbers {
+	return &Numbers{
+		start: start,
+		end:   end,
+	}
+}
+
+type Numbers struct {
+	start, end int
+}
+
+//NumbersIterator implement Iterator interface
+func (n *Numbers) Iterator() Iterator {
+	return &NumbersIterator{
+		numbers: n,
+		next:    n.start,
+	}
+}
+
+//NumbersIterator
+type NumbersIterator struct {
+	numbers *Numbers
+	next    int
+}
+
+func (i *NumbersIterator) First() {
+	i.next = i.numbers.start
+}
+
+func (i *NumbersIterator) IsDone() bool {
+	return i.next > i.numbers.start
+}
+
+func (i *NumbersIterator) Next() interface{} {
+	if !i.IsDone() {
+		next := i.next
+		i.next++
+		return next
+	}
+	return nil
+}
+
+//迭代打印
+func IteratorPrint(i Iterator) {
+	for i.First(); !i.IsDone(); {
+		c := i.Next()
+		fmt.Printf("%#v\n", c)
+	}
+}

Go/DesignPattern/Iterator/iterator_test.go

@@ -0,0 +1,16 @@
+/**
+* @Author:zhoutao
+* @Date:2020/12/12 下午12:04
+* @Desc:
+ */
+
+package iterator
+
+//以相同的方式迭代不同类型的集合
+
+func ExampleIterator() {
+	var aggregate Aggregate
+	aggregate = NewNumbers(1, 10)
+
+	IteratorPrint(aggregate.Iterator())
+}