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基础使用

package main

import (
	"fmt"
	"github.com/gogf/gf/v2/container/glist"
)

func main() {
	// Not concurrent-safe in default.
	l := glist.New()
	
    // Push
	l.PushBack(1) //从后面插入值
    l.PushBack(2) //从后面插入值
    e := l.PushFront(0) //从前面插入值

    // Insert
	l.InsertBefore(e, -1) //从0的前面插入值
    l.InsertAfter(e, "a") //从0的后面插入值
	fmt.Println(l)

	// Pop Pop 出栈后,从list里移除
    fmt.Println(l.PopFront()) // 从前面出栈,返回出栈的值
    fmt.Println(l.PopBack()) //从后面出栈
    fmt.Println(l)

	// All
	fmt.Println(l.FrontAll()) //正序返回一个复本
    fmt.Println(l.BackAll())  //逆序返回一个复本

    // Output:
	// [-1,0,"a",1,2]
	// -1
	// 2
	// [0,"a",1]
	// [0 "a" 1]
	// [1 "a" 0]
}

链表遍历

该示例中我们将通过读锁和写锁遍历一个并发安全的链表,分别通过RLockFuncLockFunc实现。执行后,输出结果为:

package main

import (
	"container/list"
	"fmt"
	"github.com/gogf/gf/v2/container/garray"
	"github.com/gogf/gf/v2/container/glist"
)

func main() {
	// concurrent-safe list.
	l := glist.NewFrom(garray.NewArrayRange(1, 9, 1).Slice(), true)
    fmt.Println(l)
	// iterate reading from head.
	l.RLockFunc(func(list *list.List) {
		length := list.Len()
		if length > 0 {
			for i, e := 0, list.Front(); i < length; i, e = i+1, e.Next() {
				fmt.Print(e.Value)
			}
		}
	})
	fmt.Println()
	// iterate reading from tail.
	l.RLockFunc(func(list *list.List) {
		length := list.Len()
		if length > 0 {
			for i, e := 0, list.Back(); i < length; i, e = i+1, e.Prev() {
				fmt.Print(e.Value)
			}
		}
	})

    fmt.Println()

    // iterate reading from head using IteratorAsc.
	l.IteratorAsc(func(e *glist.Element) bool {
		fmt.Print(e.Value)
		return true
	})
	fmt.Println()
	// iterate reading from tail using IteratorDesc.
	l.IteratorDesc(func(e *glist.Element) bool {
		fmt.Print(e.Value)
		return true
	})

	fmt.Println()

	// iterate writing from head.
	l.LockFunc(func(list *list.List) {
		length := list.Len()
		if length > 0 {
			for i, e := 0, list.Front(); i < length; i, e = i+1, e.Next() {
				if e.Value == 6 {
					e.Value = "M"
					break
				}
			}
		}
	})
	fmt.Println(l)  	

    // Output:
	// [1,2,3,4,5,6,7,8,9]
	// 123456789
	// 987654321
	// 123456789
	// 987654321
	// [1,2,3,4,5,M,7,8,9]

Push*元素项入栈

package main

import (
	"fmt"
	"github.com/gogf/gf/v2/container/glist"
	"github.com/gogf/gf/v2/frame/g"
)

func main() {
	l := glist.NewFrom(g.Slice{1, 2, 3, 4, 5})

	l.PushBack(6)
	fmt.Println(l)

	l.PushFront(0)
	fmt.Println(l)
    
    // 正数从右边入栈
	l.PushBacks(g.Slice{7, 8})
	fmt.Println(l)

    // 负数从左边入栈
	l.PushFronts(g.Slice{-1, -2}) 
	fmt.Println(l)

	l.PushFrontList(glist.NewFrom(g.Slice{"a", "b", "c"}))
	l.PushBackList(glist.NewFrom(g.Slice{"d", "e", "f"}))
	fmt.Println(l)

	// Output:
	// [1,2,3,4,5,6]
	// [0,1,2,3,4,5,6]
	// [0,1,2,3,4,5,6,7,8]
	// [-2,-1,0,1,2,3,4,5,6,7,8]
	// ["a","b","c",-2,-1,0,1,2,3,4,5,6,7,8,"d","e","f"]

}

Pop*元素项出栈

package main

import (
	"fmt"
	"github.com/gogf/gf/v2/container/glist"
	"github.com/gogf/gf/v2/frame/g"
)

func main() {
	l := glist.NewFrom(g.Slice{1, 2, 3, 4, 5, 6, 7, 8, 9})

	fmt.Println(l.PopBack())
	fmt.Println(l.PopBacks(2))
	fmt.Println(l.PopFront())
	fmt.Println(l.PopFronts(2))
    
	fmt.Println(glist.NewFrom(g.Slice{"a", "b", "c", "d"}).PopFrontAll())
	fmt.Println(glist.NewFrom(g.Slice{"a", "b", "c", "d"}).PopBackAll())

	// Output:
	// 9
	// [8 7]
	// 1
	// [2 3]
    // [4,5,6]
	// [a b c d]
	// [d c b a]
}

Move*/Insert*元素项移动、插入

package main

import (
	"fmt"
	"github.com/gogf/gf/v2/container/glist"
	"github.com/gogf/gf/v2/frame/g"
)

func main() {
	l := glist.NewFrom(g.Slice{1, 2, 3, 4, 5, 6, 7, 8, 9})

	l.MoveToBack(l.Front()) //将第一个元素(1)移动最右边  [2,3,4,5,6,7,8,9,1] 
    l.MoveToFront(l.Back().Prev()) //将最后一项的前一个元素(9)移动最左边  [9,2,3,4,5,6,7,8,1]
    fmt.Println(l)

	// 将2到栈首元素的前面
	l.MoveBefore(l.Front().Next(), l.Front())
	// 将8到栈尾元素的后面
	l.MoveAfter(l.Back().Prev(), l.Back())
	fmt.Println(l)

	// 在栈尾元素前插入新元素
	l.InsertBefore(l.Back(), "a")
	// 在栈首元素后插入新元素
	l.InsertAfter(l.Front(), "b")

	// Output:
	// [9,2,3,4,5,6,7,8,1]
	// [2,9,3,4,5,6,7,1,8]
	// [2,"b",9,3,4,5,6,7,1,"a",8]
}

Join元素项串连

package main

import (
	"fmt"
	"github.com/gogf/gf/v2/container/glist"
	"github.com/gogf/gf/v2/frame/g"
)

func main() {
	var l glist.List
	l.PushBacks(g.Slice{"a", "b", "c", "d"})

	fmt.Println(l.Join(","))

	// Output:
	// a,b,c,d
}

Remove*元素项移除

package main

import (
	"fmt"
	"github.com/gogf/gf/v2/container/glist"
	"github.com/gogf/gf/v2/frame/g"
)

func main() { 	
    l := glist.NewFrom(g.Slice{0, 1, 2, 3, 4, 5, 6, 7, 8, 9})
	fmt.Println(l)
	
	fmt.Println(l.Remove(l.Front()))
	fmt.Println(l)

	l.Removes([]*glist.Element{l.Front(), l.Front().Next()})
	fmt.Println(l)

	l.RemoveAll()
	fmt.Println(l)

	// Output:
	// [0,1,2,3,4,5,6,7,8,9]
	// 0
	// [1,2,3,4,5,6,7,8,9]
	// [3,4,5,6,7,8,9]
	// [] }

JSON序列化/反序列

glist容器实现了标准库json数据格式的序列化/反序列化接口。

  • Marshal

    package main
    
    import (
        "encoding/json"
        "fmt"
        "github.com/gogf/gf/v2/container/glist"
        "github.com/gogf/gf/v2/frame/g"
    )
    
    func main() {
        type Student struct {
            Id     int
            Name   string
            Scores *glist.List
        }
        s := Student{
            Id:     1,
            Name:   "john",
            Scores: glist.NewFrom(g.Slice{100, 99, 98}),
        }
        b, _ := json.Marshal(s)
        fmt.Println(string(b))
    
    	// Output:
    	// {"Id":1,"Name":"john","Scores":[100,99,98]}
    }
  • Unmarshal

    package main
    
    
    import (
        "encoding/json"
        "fmt"
        "github.com/gogf/gf/v2/container/glist"
    )
    
    
    func main() {
        b := []byte(`{"Id":1,"Name":"john","Scores":[100,99,98]}`)
        type Student struct {
            Id     int
            Name   string
            Scores *glist.List
        }
        s := Student{}
        json.Unmarshal(b, &s)
        fmt.Println(s)
    
    	// Output:
    	// {1 john [100,99,98]}
    }






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