A high-performance slice Utilities for Go.
- high-performance slice filter/finder.
- linked-list generics template using Gennry
go get github.com/kazu/loncha
slice utility dosent use reflect/interface operation.
import "github.com/kazu/loncha"
type GameObject struct {
ID int
Name string
Pos []float
}
...
var objs []GameObjectfind object from slice
loncha.Find(&objs, func(i int) bool {
return objs[i].ID == 6
} filter/delete object via condition function
loncha.Filter(&objs, func(obj *GameObject) bool {
return obj.ID == 12
}
loncha.Delete(&objs, func(i int) bool {
return objs[i].ID == 555
})select object with condition function
// find one object with conditions.
obj, err := Select(&objs, func(i int) bool {
return slice[i].ID < 50
})shuffle slice
err = loncha.Shuffle(objs, 2)
loncha.Reverse(objs)got intersection from two slices
var obj2 []GameObject
intersectedObj := InsertSect(obj, obj2)
sort.Slice(objs, func(i int) bool {
return objs[i].ID >= objs[j].ID
})
sort.Slice(objs2, func(i int) bool {
return objs[i].ID >= objs[j].ID
})
intersect2 := IntersectSorted(obj, obj2, func(s []GameObject, i int) int {
return s[i].ID
})subtraction from two slices
subtractObj := Sub(obj, obj2)
subtract2 := SubSorted(obj, obj2, func(s []GameObject, i int) int {
return s[i].ID
})Returns an object formed from operands via function
slice1 := []int{10, 6, 4, 2}
sum := Inject(slice1, func(sum *int, t int) int {
return *sum + t
})define base struct
package game_object
import (
"github.com/kazu/loncha/list_head"
type Player struct {
ID int
Name string
Hp int
list_head.ListHead
}
generate linked-list
$ go get go get github.com/cheekybits/genny
$ wget -q -O - "https://github.com/kazu/loncha/master/container_list/list.go" | genny gen "ListEntry=Player" > player_list.go
$ wget -q -O - "https://github.com/kazu/loncha/master/container_list/list_test.go" | genny gen "ListEntry=Player" > player_list_test.goloncha.Uniq-16 1000 997543 ns/op 548480 B/op 16324 allocs/op
loncha.UniqWithSort-16 1000 2237924 ns/op 256 B/op 7 allocs/op
loncha.UniqWithSort(sort)-16 1000 260283 ns/op 144 B/op 4 allocs/op
hand_Uniq-16 1000 427765 ns/op 442642 B/op 8 allocs/op
hand_Uniq_iface-16 1000 808895 ns/op 632225 B/op 6322 allocs/op
go-funk.Uniq-16 1000 1708396 ns/op 655968 B/op 10004 allocs/op
loncha.Filter-16 100 89142 ns/op 82119 B/op 4 allocs/op
loncha.Filter_pointer-16 100 201 ns/op 0 B/op 0 allocs/op
hand_Filter_pointer-16 100 24432 ns/op 81921 B/op 1 allocs/op
go-funk.Filter-16 100 2370492 ns/op 640135 B/op 20004 allocs/op
go-funk.Filter_pointer-16 100 1048 ns/op 64 B/op 2 allocs/op