cpolis/cmd/data/articles.go

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package data
import "time"
type Article struct {
Title string
Created time.Time
Desc string
Content string
}
type ArticleList struct {
addChan chan Article
releaseChan chan int
returnChan chan Article
List []Article
}
func (l *ArticleList) start() {
for {
select {
case article := <-l.addChan:
l.List = append(l.List, article)
case i := <-l.releaseChan:
l.returnChan <- l.List[i]
l.List = append(l.List[:i], l.List[i+1:]...)
}
}
}
func NewArticleList() *ArticleList {
list := &ArticleList{
List: []Article{},
addChan: make(chan Article),
releaseChan: make(chan int),
returnChan: make(chan Article),
}
list.start()
return list
}
func (l *ArticleList) Close() {
close(l.addChan)
close(l.releaseChan)
close(l.returnChan)
}
func (l *ArticleList) Add(a Article) {
l.addChan <- a
}
func (l *ArticleList) Release(i int) (Article, bool) {
if i < 0 || i > len(l.List) {
return Article{}, false
}
l.releaseChan <- i
return <-l.returnChan, true
}