Added more test cmds.

This commit is contained in:
Andrey Parhomenko 2023-07-21 20:38:32 +03:00
parent 863da1e309
commit 63bff23ca4
6 changed files with 84 additions and 15 deletions

22
src/cmd/ll/main.go Normal file
View file

@ -0,0 +1,22 @@
package main
import (
"github.com/mojosa-software/godat/src/llx"
"fmt"
)
func main() {
ll := llx.New[string]()
ll.Append("zero")
ll.Append("one")
ll.Append("two")
ll.Append("three")
ll.Append("four")
ll.Push("minus one")
for p := range ll.Chan() {
fmt.Println(p.K, p.V)
}
}

26
src/cmd/pool/main.go Normal file
View file

@ -0,0 +1,26 @@
package main
import (
"github.com/mojosa-software/godat/src/poolx"
"fmt"
)
func main() {
values := []string{
"zero", "one",
"should be deleted",
"two", "three",
}
pool := poolx.New[string]()
for _, v := range values {
pool.Append(v)
}
pool.DeleteValue("should be deleted")
for p := range pool.Chan() {
fmt.Println(p.K, p.V)
}
}

11
src/iterx/misc.go Normal file
View file

@ -0,0 +1,11 @@
package iterx
func ChanToSlice[V any](c chan V) []V {
ret := []V{}
for v := range c {
ret = append(ret, v)
}
return ret
}

View file

@ -5,6 +5,11 @@ package llx
// linked list than in standard library since it uses
// the new conception of generics.
import (
"github.com/mojosa-software/godat/src/iterx"
)
// The type represents linked list data structure.
type LinkedList[V any] struct {
// First empty element (not used to store values).
// For fast pushing.
@ -15,17 +20,12 @@ type LinkedList[V any] struct {
ln int
}
// The type represents element of the linked list.
type Element[V any] struct {
next *Element[V]
value V
}
type Pair[V any] struct {
I int
V V
}
// Returns new empty linked list storing the V type.
func New[V any]() *LinkedList[V] {
return &LinkedList[V]{
@ -36,7 +36,7 @@ func New[V any]() *LinkedList[V] {
}
// Get length of the linked list.
func (ll *LinkedList[V]) Len() int {
func (ll *LinkedList[V]) Length() int {
return ll.ln
}
@ -75,7 +75,8 @@ func (ll *LinkedList[V]) Set(i int, v V) (bool) {
return true
}
func (ll *LinkedList[V]) Del(i int) (bool) {
// Deletes the element by its index.
func (ll *LinkedList[V]) Delete(i int) (bool) {
if ll.ln <= i {
return false
}
@ -133,32 +134,40 @@ func (ll *LinkedList[V]) Append(v V) {
ll.ln++
}
// Returns the first element of the linked list.
func (ll *LinkedList[V]) First() *Element[V] {
return ll.before.next
}
// Get elements value.
func (ll *Element[V]) Value() V {
return ll.value
}
// Returns the next element. If the returned value == nil,
// then it is the last element.
func (ll *Element[V]) Next() *Element[V] {
return ll.next
}
// Returns the last element.
func (ll *LinkedList[V]) Last() *Element[V] {
return ll.last
}
// Returns a channel of Pair that contains index and the value.
func (ll *LinkedList[V]) Range() chan Pair[V] {
chn := make(chan Pair[V])
func (ll *LinkedList[V]) Chan() iterx.PairChan[int, V] {
chn := make(iterx.PairChan[int, V])
go func(){
i := -1
el := ll.before
for el.next != nil {
i++
el = el.next
chn <- Pair[V]{i, el.value}
chn <- iterx.Pair[int, V]{
K: i,
V: el.value,
}
}
close(chn)
}()

View file

@ -2,6 +2,7 @@ package poolx
import (
"github.com/mojosa-software/godat/src/llx"
"github.com/mojosa-software/godat/src/iterx"
)
// Ordered value-only based structure.
@ -24,12 +25,12 @@ func (p *Pool[V]) Append(v V) {
}
// Deletes the first appearance of the value in the list.
func (p *Pool[V]) Del(v V) bool {
func (p *Pool[V]) DeleteValue(v V) bool {
i := 0
ll := p.store
for e := ll.First() ; e != nil ; e = e.Next() {
if e.Value() == v {
ll.Del(i)
ll.Delete(i)
return true
}
@ -39,7 +40,7 @@ func (p *Pool[V]) Del(v V) bool {
return false
}
func (p *Pool[V]) Range() chan llx.Pair[V] {
return p.store.Range()
func (p *Pool[V]) Chan() iterx.PairChan[int, V] {
return p.store.Chan()
}