github.com/demonoid81/moby@v0.0.0-20200517203328-62dd8e17c460/container/history.go (about) 1 package container // import "github.com/demonoid81/moby/container" 2 3 import "sort" 4 5 // History is a convenience type for storing a list of containers, 6 // sorted by creation date in descendant order. 7 type History []*Container 8 9 // Len returns the number of containers in the history. 10 func (history *History) Len() int { 11 return len(*history) 12 } 13 14 // Less compares two containers and returns true if the second one 15 // was created before the first one. 16 func (history *History) Less(i, j int) bool { 17 containers := *history 18 return containers[j].Created.Before(containers[i].Created) 19 } 20 21 // Swap switches containers i and j positions in the history. 22 func (history *History) Swap(i, j int) { 23 containers := *history 24 containers[i], containers[j] = containers[j], containers[i] 25 } 26 27 // sort orders the history by creation date in descendant order. 28 func (history *History) sort() { 29 sort.Sort(history) 30 }