139 lines
2.5 KiB
Go
139 lines
2.5 KiB
Go
package coll
|
|
|
|
import "fmt"
|
|
|
|
const (
|
|
DefaultSize = 4
|
|
)
|
|
|
|
type Vector[T any] []T
|
|
|
|
func New[T any]() Vector[T] {
|
|
return WithCap[T](DefaultSize)
|
|
}
|
|
|
|
func WithCap[T any](capacity int) Vector[T] {
|
|
return make(Vector[T], 0, capacity)
|
|
}
|
|
|
|
func From[T any](v ...T) Vector[T] {
|
|
return Vector[T](v)
|
|
}
|
|
|
|
func (v Vector[T]) Push(t T) Vector[T] {
|
|
if len(v) == cap(v) {
|
|
v = v.upsize()
|
|
}
|
|
|
|
v = v[:len(v)+1]
|
|
v[len(v)-1] = t
|
|
return v
|
|
}
|
|
|
|
func (v Vector[T]) Append(t ...T) Vector[T] {
|
|
if cap(v)-len(v) < len(t) {
|
|
v = v.upsizeSpecific(len(t))
|
|
}
|
|
startLen := len(v)
|
|
v = v[:len(v)+len(t)]
|
|
var tIndex int
|
|
for index := startLen; index < cap(v); index++ {
|
|
v[index] = t[tIndex]
|
|
tIndex++
|
|
}
|
|
return v
|
|
}
|
|
|
|
func (v Vector[T]) Remove(index int) Vector[T] {
|
|
return From(append(v[:index], v[index+1:]...)...)
|
|
}
|
|
|
|
// Faster remove function that can be used on vectors where ordering doesn't matter
|
|
func (v Vector[T]) RemoveUnordered(index int) Vector[T] {
|
|
v[index] = v[len(v)-1]
|
|
return v[:len(v)-1]
|
|
}
|
|
|
|
func (v Vector[T]) upsize() Vector[T] {
|
|
return v.upsizeSpecific(cap(v))
|
|
}
|
|
|
|
func (v Vector[T]) upsizeSpecific(extraSize int) Vector[T] {
|
|
resized := make([]T, len(v), cap(v)+extraSize)
|
|
copy(resized, v)
|
|
return resized
|
|
}
|
|
|
|
func (v Vector[T]) panicIndex(index int) {
|
|
min := -1
|
|
if len(v) != 0 {
|
|
min = 0
|
|
}
|
|
panic(fmt.Sprintf("index %d out of range [%d;%d)", index, min, len(v)))
|
|
}
|
|
|
|
// GetSoft tries to get the requested index, or returns a default value if
|
|
// it's out of range
|
|
func (v Vector[T]) GetSoft(index int) T {
|
|
var result T
|
|
if index < 0 || index >= len(v) {
|
|
return result
|
|
}
|
|
return v[index]
|
|
}
|
|
|
|
func (v Vector[T]) Get(index int) T {
|
|
if index < 0 || index >= len(v) {
|
|
v.panicIndex(index)
|
|
}
|
|
return v[index]
|
|
}
|
|
|
|
func (v Vector[T]) Set(index int, value T) Vector[T] {
|
|
if index < 0 || index >= len(v) {
|
|
v.panicIndex(index)
|
|
}
|
|
v[index] = value
|
|
return v
|
|
}
|
|
|
|
func (v Vector[T]) Pop() (T, Vector[T]) {
|
|
t := v[len(v)-1]
|
|
return t, v[:len(v)-1]
|
|
}
|
|
|
|
func (v Vector[T]) Sub(start, end int) Vector[T] {
|
|
if start >= len(v) {
|
|
v.panicIndex(start)
|
|
}
|
|
if end >= len(v) {
|
|
v.panicIndex(end)
|
|
}
|
|
if start < 0 {
|
|
return From(v[:end]...)
|
|
}
|
|
if end < 0 {
|
|
return From(v[start:]...)
|
|
}
|
|
return From(v[start:end]...)
|
|
}
|
|
|
|
func (v Vector[T]) Filter(f func(T) bool) Vector[T] {
|
|
return Filter(v, f)
|
|
}
|
|
|
|
func (v Vector[T]) Any(f func(T) bool) bool {
|
|
return Any(v, f)
|
|
}
|
|
|
|
func (v Vector[T]) Take(howMany int) Vector[T] {
|
|
return Take(v, howMany)
|
|
}
|
|
|
|
func (v Vector[T]) Clone() Vector[T] {
|
|
clone := make([]T, len(v))
|
|
copy(clone, v)
|
|
v = clone
|
|
return v
|
|
}
|