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typesafe.go
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typesafe.go
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package funk
import (
"math/rand"
)
// InBools is an alias of ContainsBool, returns true if a bool is present in a iteratee.
func InBools(s []bool, v bool) bool {
return ContainsBool(s, v)
}
// InInts is an alias of ContainsInt, returns true if an int is present in a iteratee.
func InInts(s []int, v int) bool {
return ContainsInt(s, v)
}
// InInt32s is an alias of ContainsInt32, returns true if an int32 is present in a iteratee.
func InInt32s(s []int32, v int32) bool {
return ContainsInt32(s, v)
}
// InInt64s is an alias of ContainsInt64, returns true if an int64 is present in a iteratee.
func InInt64s(s []int64, v int64) bool {
return ContainsInt64(s, v)
}
// InUInts is an alias of ContainsUInt, returns true if an uint is present in a iteratee.
func InUInts(s []uint, v uint) bool {
return ContainsUInt(s, v)
}
// InUInt32s is an alias of ContainsUInt32, returns true if an uint32 is present in a iteratee.
func InUInt32s(s []uint32, v uint32) bool {
return ContainsUInt32(s, v)
}
// InUInt64s is an alias of ContainsUInt64, returns true if an uint64 is present in a iteratee.
func InUInt64s(s []uint64, v uint64) bool {
return ContainsUInt64(s, v)
}
// InStrings is an alias of ContainsString, returns true if a string is present in a iteratee.
func InStrings(s []string, v string) bool {
return ContainsString(s, v)
}
// InFloat32s is an alias of ContainsFloat32, returns true if a float32 is present in a iteratee.
func InFloat32s(s []float32, v float32) bool {
return ContainsFloat32(s, v)
}
// InFloat64s is an alias of ContainsFloat64, returns true if a float64 is present in a iteratee.
func InFloat64s(s []float64, v float64) bool {
return ContainsFloat64(s, v)
}
// FindFloat64 iterates over a collection of float64, returning an array of
// all float64 elements predicate returns truthy for.
func FindFloat64(s []float64, cb func(s float64) bool) (float64, bool) {
for _, i := range s {
result := cb(i)
if result {
return i, true
}
}
return 0.0, false
}
// FindFloat32 iterates over a collection of float32, returning the first
// float32 element predicate returns truthy for.
func FindFloat32(s []float32, cb func(s float32) bool) (float32, bool) {
for _, i := range s {
result := cb(i)
if result {
return i, true
}
}
return 0.0, false
}
// FindInt iterates over a collection of int, returning the first
// int element predicate returns truthy for.
func FindInt(s []int, cb func(s int) bool) (int, bool) {
for _, i := range s {
result := cb(i)
if result {
return i, true
}
}
return 0, false
}
// FindInt32 iterates over a collection of int32, returning the first
// int32 element predicate returns truthy for.
func FindInt32(s []int32, cb func(s int32) bool) (int32, bool) {
for _, i := range s {
result := cb(i)
if result {
return i, true
}
}
return 0, false
}
// FindInt64 iterates over a collection of int64, returning the first
// int64 element predicate returns truthy for.
func FindInt64(s []int64, cb func(s int64) bool) (int64, bool) {
for _, i := range s {
result := cb(i)
if result {
return i, true
}
}
return 0, false
}
// FindString iterates over a collection of string, returning the first
// string element predicate returns truthy for.
func FindString(s []string, cb func(s string) bool) (string, bool) {
for _, i := range s {
result := cb(i)
if result {
return i, true
}
}
return "", false
}
// FilterBool iterates over a collection of bool, returning an array of
// all bool elements predicate returns truthy for.
func FilterBool(s []bool, cb func(s bool) bool) []bool {
results := []bool{}
for _, i := range s {
result := cb(i)
if result {
results = append(results, i)
}
}
return results
}
// FilterFloat64 iterates over a collection of float64, returning an array of
// all float64 elements predicate returns truthy for.
func FilterFloat64(s []float64, cb func(s float64) bool) []float64 {
results := []float64{}
for _, i := range s {
result := cb(i)
if result {
results = append(results, i)
}
}
return results
}
// FilterFloat32 iterates over a collection of float32, returning an array of
// all float32 elements predicate returns truthy for.
func FilterFloat32(s []float32, cb func(s float32) bool) []float32 {
results := []float32{}
for _, i := range s {
result := cb(i)
if result {
results = append(results, i)
}
}
return results
}
// FilterInt iterates over a collection of int, returning an array of
// all int elements predicate returns truthy for.
func FilterInt(s []int, cb func(s int) bool) []int {
results := []int{}
for _, i := range s {
result := cb(i)
if result {
results = append(results, i)
}
}
return results
}
// FilterInt32 iterates over a collection of int32, returning an array of
// all int32 elements predicate returns truthy for.
func FilterInt32(s []int32, cb func(s int32) bool) []int32 {
results := []int32{}
for _, i := range s {
result := cb(i)
if result {
results = append(results, i)
}
}
return results
}
// FilterInt64 iterates over a collection of int64, returning an array of
// all int64 elements predicate returns truthy for.
func FilterInt64(s []int64, cb func(s int64) bool) []int64 {
results := []int64{}
for _, i := range s {
result := cb(i)
if result {
results = append(results, i)
}
}
return results
}
// FilterUInt iterates over a collection of uint, returning an array of
// all uint elements predicate returns truthy for.
func FilterUInt(s []uint, cb func(s uint) bool) []uint {
results := []uint{}
for _, i := range s {
result := cb(i)
if result {
results = append(results, i)
}
}
return results
}
// FilterUInt32 iterates over a collection of uint32, returning an array of
// all uint32 elements predicate returns truthy for.
func FilterUInt32(s []uint32, cb func(s uint32) bool) []uint32 {
results := []uint32{}
for _, i := range s {
result := cb(i)
if result {
results = append(results, i)
}
}
return results
}
// FilterUInt64 iterates over a collection of uint64, returning an array of
// all uint64 elements predicate returns truthy for.
func FilterUInt64(s []uint64, cb func(s uint64) bool) []uint64 {
results := []uint64{}
for _, i := range s {
result := cb(i)
if result {
results = append(results, i)
}
}
return results
}
// FilterString iterates over a collection of string, returning an array of
// all string elements predicate returns truthy for.
func FilterString(s []string, cb func(s string) bool) []string {
results := []string{}
for _, i := range s {
result := cb(i)
if result {
results = append(results, i)
}
}
return results
}
// ContainsBool returns true if a boolean is present in a iteratee.
func ContainsBool(s []bool, v bool) bool {
for _, vv := range s {
if vv == v {
return true
}
}
return false
}
// ContainsInt returns true if an int is present in a iteratee.
func ContainsInt(s []int, v int) bool {
for _, vv := range s {
if vv == v {
return true
}
}
return false
}
// ContainsInt32 returns true if an int32 is present in a iteratee.
func ContainsInt32(s []int32, v int32) bool {
for _, vv := range s {
if vv == v {
return true
}
}
return false
}
// ContainsInt64 returns true if an int64 is present in a iteratee.
func ContainsInt64(s []int64, v int64) bool {
for _, vv := range s {
if vv == v {
return true
}
}
return false
}
// ContainsUInt returns true if an uint is present in a iteratee.
func ContainsUInt(s []uint, v uint) bool {
for _, vv := range s {
if vv == v {
return true
}
}
return false
}
// ContainsUInt32 returns true if an uint32 is present in a iteratee.
func ContainsUInt32(s []uint32, v uint32) bool {
for _, vv := range s {
if vv == v {
return true
}
}
return false
}
// ContainsUInt64 returns true if an uint64 is present in a iteratee.
func ContainsUInt64(s []uint64, v uint64) bool {
for _, vv := range s {
if vv == v {
return true
}
}
return false
}
// ContainsString returns true if a string is present in a iteratee.
func ContainsString(s []string, v string) bool {
for _, vv := range s {
if vv == v {
return true
}
}
return false
}
// ContainsFloat32 returns true if a float32 is present in a iteratee.
func ContainsFloat32(s []float32, v float32) bool {
for _, vv := range s {
if vv == v {
return true
}
}
return false
}
// ContainsFloat64 returns true if a float64 is present in a iteratee.
func ContainsFloat64(s []float64, v float64) bool {
for _, vv := range s {
if vv == v {
return true
}
}
return false
}
// SumInt32 sums a int32 iteratee and returns the sum of all elements
func SumInt32(s []int32) (sum int32) {
for _, v := range s {
sum += v
}
return
}
// SumInt64 sums a int64 iteratee and returns the sum of all elements
func SumInt64(s []int64) (sum int64) {
for _, v := range s {
sum += v
}
return
}
// SumInt sums a int iteratee and returns the sum of all elements
func SumInt(s []int) (sum int) {
for _, v := range s {
sum += v
}
return
}
// SumUInt32 sums a uint32 iteratee and returns the sum of all elements
func SumUInt32(s []uint32) (sum uint32) {
for _, v := range s {
sum += v
}
return
}
// SumUInt64 sums a uint64 iteratee and returns the sum of all elements
func SumUInt64(s []uint64) (sum uint64) {
for _, v := range s {
sum += v
}
return
}
// SumUInt sums a uint iteratee and returns the sum of all elements
func SumUInt(s []uint) (sum uint) {
for _, v := range s {
sum += v
}
return
}
// SumFloat64 sums a float64 iteratee and returns the sum of all elements
func SumFloat64(s []float64) (sum float64) {
for _, v := range s {
sum += v
}
return
}
// SumFloat32 sums a float32 iteratee and returns the sum of all elements
func SumFloat32(s []float32) (sum float32) {
for _, v := range s {
sum += v
}
return
}
// ReverseBools reverses an array of bool
func ReverseBools(s []bool) []bool {
for i, j := 0, len(s)-1; i < len(s)/2; i, j = i+1, j-1 {
s[i], s[j] = s[j], s[i]
}
return s
}
// ReverseStrings reverses an array of string
func ReverseStrings(s []string) []string {
for i, j := 0, len(s)-1; i < len(s)/2; i, j = i+1, j-1 {
s[i], s[j] = s[j], s[i]
}
return s
}
// ReverseInt reverses an array of int
func ReverseInt(s []int) []int {
for i, j := 0, len(s)-1; i < len(s)/2; i, j = i+1, j-1 {
s[i], s[j] = s[j], s[i]
}
return s
}
// ReverseInt32 reverses an array of int32
func ReverseInt32(s []int32) []int32 {
for i, j := 0, len(s)-1; i < len(s)/2; i, j = i+1, j-1 {
s[i], s[j] = s[j], s[i]
}
return s
}
// ReverseInt64 reverses an array of int64
func ReverseInt64(s []int64) []int64 {
for i, j := 0, len(s)-1; i < len(s)/2; i, j = i+1, j-1 {
s[i], s[j] = s[j], s[i]
}
return s
}
// ReverseUInt reverses an array of int
func ReverseUInt(s []uint) []uint {
for i, j := 0, len(s)-1; i < len(s)/2; i, j = i+1, j-1 {
s[i], s[j] = s[j], s[i]
}
return s
}
// ReverseUInt32 reverses an array of uint32
func ReverseUInt32(s []uint32) []uint32 {
for i, j := 0, len(s)-1; i < len(s)/2; i, j = i+1, j-1 {
s[i], s[j] = s[j], s[i]
}
return s
}
// ReverseUInt64 reverses an array of uint64
func ReverseUInt64(s []uint64) []uint64 {
for i, j := 0, len(s)-1; i < len(s)/2; i, j = i+1, j-1 {
s[i], s[j] = s[j], s[i]
}
return s
}
// ReverseFloat64 reverses an array of float64
func ReverseFloat64(s []float64) []float64 {
for i, j := 0, len(s)-1; i < len(s)/2; i, j = i+1, j-1 {
s[i], s[j] = s[j], s[i]
}
return s
}
// ReverseFloat32 reverses an array of float32
func ReverseFloat32(s []float32) []float32 {
for i, j := 0, len(s)-1; i < len(s)/2; i, j = i+1, j-1 {
s[i], s[j] = s[j], s[i]
}
return s
}
// ReverseString reverses a string
func ReverseString(s string) string {
r := []rune(s)
for i, j := 0, len(r)-1; i < len(r)/2; i, j = i+1, j-1 {
r[i], r[j] = r[j], r[i]
}
return string(r)
}
func indexOf(n int, f func(int) bool) int {
for i := 0; i < n; i++ {
if f(i) {
return i
}
}
return -1
}
// IndexOfBool gets the index at which the first occurrence of a bool value is found in array or return -1
// if the value cannot be found
func IndexOfBool(a []bool, x bool) int {
return indexOf(len(a), func(i int) bool { return a[i] == x })
}
// IndexOfInt gets the index at which the first occurrence of an int value is found in array or return -1
// if the value cannot be found
func IndexOfInt(a []int, x int) int {
return indexOf(len(a), func(i int) bool { return a[i] == x })
}
// IndexOfInt32 gets the index at which the first occurrence of an int32 value is found in array or return -1
// if the value cannot be found
func IndexOfInt32(a []int32, x int32) int {
return indexOf(len(a), func(i int) bool { return a[i] == x })
}
// IndexOfInt64 gets the index at which the first occurrence of an int64 value is found in array or return -1
// if the value cannot be found
func IndexOfInt64(a []int64, x int64) int {
return indexOf(len(a), func(i int) bool { return a[i] == x })
}
// IndexOfUInt gets the index at which the first occurrence of an uint value is found in array or return -1
// if the value cannot be found
func IndexOfUInt(a []uint, x uint) int {
return indexOf(len(a), func(i int) bool { return a[i] == x })
}
// IndexOfUInt32 gets the index at which the first occurrence of an uint32 value is found in array or return -1
// if the value cannot be found
func IndexOfUInt32(a []uint32, x uint32) int {
return indexOf(len(a), func(i int) bool { return a[i] == x })
}
// IndexOfUInt64 gets the index at which the first occurrence of an uint64 value is found in array or return -1
// if the value cannot be found
func IndexOfUInt64(a []uint64, x uint64) int {
return indexOf(len(a), func(i int) bool { return a[i] == x })
}
// IndexOfFloat64 gets the index at which the first occurrence of an float64 value is found in array or return -1
// if the value cannot be found
func IndexOfFloat64(a []float64, x float64) int {
return indexOf(len(a), func(i int) bool { return a[i] == x })
}
// IndexOfString gets the index at which the first occurrence of a string value is found in array or return -1
// if the value cannot be found
func IndexOfString(a []string, x string) int {
return indexOf(len(a), func(i int) bool { return a[i] == x })
}
func lastIndexOf(n int, f func(int) bool) int {
for i := n - 1; i >= 0; i-- {
if f(i) {
return i
}
}
return -1
}
// LastIndexOfBool gets the index at which the first occurrence of a bool value is found in array or return -1
// if the value cannot be found
func LastIndexOfBool(a []bool, x bool) int {
return lastIndexOf(len(a), func(i int) bool { return a[i] == x })
}
// LastIndexOfInt gets the index at which the first occurrence of an int value is found in array or return -1
// if the value cannot be found
func LastIndexOfInt(a []int, x int) int {
return lastIndexOf(len(a), func(i int) bool { return a[i] == x })
}
// LastIndexOfInt32 gets the index at which the first occurrence of an int32 value is found in array or return -1
// if the value cannot be found
func LastIndexOfInt32(a []int32, x int32) int {
return lastIndexOf(len(a), func(i int) bool { return a[i] == x })
}
// LastIndexOfInt64 gets the index at which the first occurrence of an int64 value is found in array or return -1
// if the value cannot be found
func LastIndexOfInt64(a []int64, x int64) int {
return lastIndexOf(len(a), func(i int) bool { return a[i] == x })
}
// LastIndexOfUInt gets the index at which the first occurrence of an uint value is found in array or return -1
// if the value cannot be found
func LastIndexOfUInt(a []uint, x uint) int {
return lastIndexOf(len(a), func(i int) bool { return a[i] == x })
}
// LastIndexOfUInt32 gets the index at which the first occurrence of an uint32 value is found in array or return -1
// if the value cannot be found
func LastIndexOfUInt32(a []uint32, x uint32) int {
return lastIndexOf(len(a), func(i int) bool { return a[i] == x })
}
// LastIndexOfUInt64 gets the index at which the first occurrence of an uint64 value is found in array or return -1
// if the value cannot be found
func LastIndexOfUInt64(a []uint64, x uint64) int {
return lastIndexOf(len(a), func(i int) bool { return a[i] == x })
}
// LastIndexOfFloat64 gets the index at which the first occurrence of an float64 value is found in array or return -1
// if the value cannot be found
func LastIndexOfFloat64(a []float64, x float64) int {
return lastIndexOf(len(a), func(i int) bool { return a[i] == x })
}
// LastIndexOfFloat32 gets the index at which the first occurrence of an float32 value is found in array or return -1
// if the value cannot be found
func LastIndexOfFloat32(a []float32, x float32) int {
return lastIndexOf(len(a), func(i int) bool { return a[i] == x })
}
// LastIndexOfString gets the index at which the first occurrence of a string value is found in array or return -1
// if the value cannot be found
func LastIndexOfString(a []string, x string) int {
return lastIndexOf(len(a), func(i int) bool { return a[i] == x })
}
// UniqBool creates an array of bool with unique values.
func UniqBool(a []bool) []bool {
results := []bool{}
for _, value := range a {
// If results is not empty, there is at most 1 value in it
if len(results) == 0 || results[0] != value {
results = append(results, value)
}
// At most 2 unique values
if len(results) == 2 {
break
}
}
return results
}
// UniqInt32 creates an array of int32 with unique values.
func UniqInt32(a []int32) []int32 {
var (
length = len(a)
seen = make(map[int32]struct{}, length)
results = make([]int32, 0)
)
for i := 0; i < length; i++ {
v := a[i]
if _, ok := seen[v]; ok {
continue
}
seen[v] = struct{}{}
results = append(results, v)
}
return results
}
// UniqInt64 creates an array of int64 with unique values.
func UniqInt64(a []int64) []int64 {
var (
length = len(a)
seen = make(map[int64]struct{}, length)
results = make([]int64, 0)
)
for i := 0; i < length; i++ {
v := a[i]
if _, ok := seen[v]; ok {
continue
}
seen[v] = struct{}{}
results = append(results, v)
}
return results
}
// UniqInt creates an array of int with unique values.
func UniqInt(a []int) []int {
var (
length = len(a)
seen = make(map[int]struct{}, length)
results = make([]int, 0)
)
for i := 0; i < length; i++ {
v := a[i]
if _, ok := seen[v]; ok {
continue
}
seen[v] = struct{}{}
results = append(results, v)
}
return results
}
// UniqUInt32 creates an array of uint32 with unique values.
func UniqUInt32(a []uint32) []uint32 {
var (
length = len(a)
seen = make(map[uint32]struct{}, length)
results = make([]uint32, 0)
)
for i := 0; i < length; i++ {
v := a[i]
if _, ok := seen[v]; ok {
continue
}
seen[v] = struct{}{}
results = append(results, v)
}
return results
}
// UniqUInt64 creates an array of uint64 with unique values.
func UniqUInt64(a []uint64) []uint64 {
var (
length = len(a)
seen = make(map[uint64]struct{}, length)
results = make([]uint64, 0)
)
for i := 0; i < length; i++ {
v := a[i]
if _, ok := seen[v]; ok {
continue
}
seen[v] = struct{}{}
results = append(results, v)
}
return results
}
// UniqUInt creates an array of uint with unique values.
func UniqUInt(a []uint) []uint {
var (
length = len(a)
seen = make(map[uint]struct{}, length)
results = make([]uint, 0)
)
for i := 0; i < length; i++ {
v := a[i]
if _, ok := seen[v]; ok {
continue
}
seen[v] = struct{}{}
results = append(results, v)
}
return results
}
// UniqString creates an array of string with unique values.
func UniqString(a []string) []string {
var (
length = len(a)
seen = make(map[string]struct{}, length)
results = make([]string, 0)
)
for i := 0; i < length; i++ {
v := a[i]
if _, ok := seen[v]; ok {
continue
}
seen[v] = struct{}{}
results = append(results, v)
}
return results
}
// UniqFloat64 creates an array of float64 with unique values.
func UniqFloat64(a []float64) []float64 {
var (
length = len(a)
seen = make(map[float64]struct{}, length)
results = make([]float64, 0)
)
for i := 0; i < length; i++ {
v := a[i]
if _, ok := seen[v]; ok {
continue
}
seen[v] = struct{}{}
results = append(results, v)
}
return results
}
// UniqFloat32 creates an array of float32 with unique values.
func UniqFloat32(a []float32) []float32 {
var (
length = len(a)
seen = make(map[float32]struct{}, length)
results = make([]float32, 0)
)
for i := 0; i < length; i++ {
v := a[i]
if _, ok := seen[v]; ok {
continue
}
seen[v] = struct{}{}
results = append(results, v)
}
return results
}
// ShuffleBool creates an array of bool shuffled values using Fisher–Yates algorithm
func ShuffleBool(a []bool) []bool {
for i := range a {
j := rand.Intn(i + 1)
a[i], a[j] = a[j], a[i]
}
return a
}
// ShuffleInt creates an array of int shuffled values using Fisher–Yates algorithm
func ShuffleInt(a []int) []int {
for i := range a {
j := rand.Intn(i + 1)
a[i], a[j] = a[j], a[i]
}
return a
}
// ShuffleInt32 creates an array of int32 shuffled values using Fisher–Yates algorithm
func ShuffleInt32(a []int32) []int32 {
for i := range a {
j := rand.Intn(i + 1)
a[i], a[j] = a[j], a[i]
}
return a
}
// ShuffleInt64 creates an array of int64 shuffled values using Fisher–Yates algorithm
func ShuffleInt64(a []int64) []int64 {
for i := range a {
j := rand.Intn(i + 1)
a[i], a[j] = a[j], a[i]
}
return a
}
// ShuffleUInt creates an array of int shuffled values using Fisher–Yates algorithm
func ShuffleUInt(a []uint) []uint {
for i := range a {
j := rand.Intn(i + 1)
a[i], a[j] = a[j], a[i]
}
return a
}
// ShuffleUInt32 creates an array of uint32 shuffled values using Fisher–Yates algorithm
func ShuffleUInt32(a []uint32) []uint32 {
for i := range a {
j := rand.Intn(i + 1)
a[i], a[j] = a[j], a[i]
}
return a
}
// ShuffleUInt64 creates an array of uint64 shuffled values using Fisher–Yates algorithm
func ShuffleUInt64(a []uint64) []uint64 {
for i := range a {
j := rand.Intn(i + 1)
a[i], a[j] = a[j], a[i]
}
return a
}
// ShuffleString creates an array of string shuffled values using Fisher–Yates algorithm
func ShuffleString(a []string) []string {
for i := range a {
j := rand.Intn(i + 1)
a[i], a[j] = a[j], a[i]
}
return a
}
// ShuffleFloat32 creates an array of float32 shuffled values using Fisher–Yates algorithm
func ShuffleFloat32(a []float32) []float32 {
for i := range a {
j := rand.Intn(i + 1)
a[i], a[j] = a[j], a[i]
}
return a
}
// ShuffleFloat64 creates an array of float64 shuffled values using Fisher–Yates algorithm
func ShuffleFloat64(a []float64) []float64 {
for i := range a {
j := rand.Intn(i + 1)
a[i], a[j] = a[j], a[i]
}
return a
}
// DropBool creates a slice with `n` bools dropped from the beginning.