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util.go
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util.go
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package iter
import (
"github.com/hopeio/cherry/utils/constraints"
"github.com/hopeio/cherry/utils/types"
)
func SliceAll[T any](input []T) Seq[T] {
return func(yield func(T) bool) {
for _, v := range input {
if !yield(v) {
return
}
}
}
}
func SliceBackward[T any](input []T) Seq[T] {
return func(yield func(T) bool) {
n := len(input) - 1
for i := n; n > 0; n-- {
if !yield(input[i]) {
return
}
}
}
}
func SliceAll2[T any](input []T) Seq2[int, T] {
return func(yield func(int, T) bool) {
for i, v := range input {
if !yield(i, v) {
return
}
}
}
}
func SliceBackward2[T any](input []T) Seq2[int, T] {
return func(yield func(int, T) bool) {
n := len(input) - 1
for i := n; n > 0; n-- {
if !yield(i, input[i]) {
return
}
}
}
}
func HashMapAll[K comparable, V any](m map[K]V) Seq[*types.Pair[K, V]] {
return func(yield func(*types.Pair[K, V]) bool) {
for k, v := range m {
if !yield(types.PairOf(k, v)) {
return
}
}
}
}
func HashMapAll2[K comparable, V any](m map[K]V) Seq2[K, V] {
return func(yield func(K, V) bool) {
for k, v := range m {
if !yield(k, v) {
return
}
}
}
}
func ChannelAll[T any](c chan T) Seq[T] {
return func(yield func(T) bool) {
for v := range c {
if !yield(v) {
return
}
}
}
}
func ChannelAll2[T any](c chan T) Seq2[int, T] {
return func(yield func(int, T) bool) {
var count int
for v := range c {
if !yield(count, v) {
return
}
count++
}
}
}
func StringAll(input string) Seq[rune] {
return func(yield func(rune) bool) {
for _, v := range input {
if !yield(v) {
return
}
}
}
}
func StringAll2(input string) Seq2[int, rune] {
return func(yield func(int, rune) bool) {
for i, v := range input {
if !yield(i, v) {
return
}
}
}
}
func RangeAll[T constraints.Number](begin, end, step T) Seq[T] {
return func(yield func(T) bool) {
for v := begin; v <= end; v += step {
if !yield(v) {
return
}
}
}
}
func RangeAll2[T constraints.Number](begin, end, step T) Seq2[int, T] {
return func(yield func(int, T) bool) {
var count int
for v := begin; v <= end; v += step {
if !yield(count, v) {
return
}
count++
}
}
}