package sliceutil

import "github.com/teamwork/utils/sliceutil"

Package sliceutil provides functions for working with slices.

The "set" helpers are simple implementations, and don't operate on true "sets" (e.g. it will retain order, []int64 can contain duplicates). Consider using something like golang-set if you want to use sets and care a lot about performance: https://github.com/deckarep/golang-set

Index ¶

• func CSVtoInt64Slice(csv string) ([]int64, error)
• func ChooseString(l []string) string
• func Complement(a, b []int64) (aOnly, bOnly []int64)
• func Difference(set []int64, others ...[]int64) []int64
• func FilterInt(list []int64, fun func(int64) bool) []int64
• func FilterIntEmpty(e int64) bool
• func FilterString(list []string, fun func(string) bool) []string
• func FilterStringEmpty(e string) bool
• func InFoldedStringSlice(list []string, str string) bool
• func InInt64Slice(list []int64, i int64) bool
• func InIntSlice(list []int, i int) bool
• func InStringSlice(list []string, str string) bool
• func InterfaceSliceTo(src []interface{}, dst interface{}) interface{}
• func Intersection(a, b []int64) []int64
• func JoinInt(ints []int64) string
• func Range(start, end int) []int
• func RemoveString(list []string, s string) (out []string)
• func RepeatString(s string, n int) (r []string)
• func StringMap(list []string, f func(string) string) []string
• func UniqInt64(list []int64) []int64
• func UniqString(list []string) []string
• func UniqueMergeSlices(s [][]int64) (result []int64)

Functions ¶

func CSVtoInt64Slice ¶

func CSVtoInt64Slice(csv string) ([]int64, error)

CSVtoInt64Slice converts a string of integers to a slice of int64.

func ChooseString ¶

func ChooseString(l []string) string

ChooseString chooses a random item from the list.

func Complement ¶

func Complement(a, b []int64) (aOnly, bOnly []int64)

Complement returns the complement of the two lists; that is, the first return value will contain elements that are only in "a" (and not in "b"), and the second return value will contain elements that are only in "b" (and not in "a").

func Difference ¶

func Difference(set []int64, others ...[]int64) []int64

Difference returns a new slice with elements that are in "set" but not in "others".

func FilterInt ¶

func FilterInt(list []int64, fun func(int64) bool) []int64

FilterInt filters a list. The function will be called for every item and those that return false will not be included in the return value.

func FilterIntEmpty ¶

func FilterIntEmpty(e int64) bool

FilterIntEmpty can be used as an argument for FilterInt() and will return false if e is empty or contains only whitespace.

func FilterString ¶

func FilterString(list []string, fun func(string) bool) []string

FilterString filters a list. The function will be called for every item and those that return false will not be included in the return value.

func FilterStringEmpty ¶

func FilterStringEmpty(e string) bool

FilterStringEmpty can be used as an argument for FilterString() and will return false if e is empty or contains only whitespace.

func InFoldedStringSlice ¶

func InFoldedStringSlice(list []string, str string) bool

InFoldedStringSlice reports whether str is within list(case-insensitive)

func InInt64Slice ¶

func InInt64Slice(list []int64, i int64) bool

InInt64Slice reports whether i is within list

func InIntSlice ¶

func InIntSlice(list []int, i int) bool

InIntSlice reports whether i is within list

func InStringSlice ¶

func InStringSlice(list []string, str string) bool

InStringSlice reports whether str is within list(case-sensitive)

func InterfaceSliceTo ¶

func InterfaceSliceTo(src []interface{}, dst interface{}) interface{}

InterfaceSliceTo converts []interface to any given slice. It will ~optimistically~ try to convert interface item to the dst item type

func Intersection ¶

func Intersection(a, b []int64) []int64

Intersection returns the elements common to both a and b

func JoinInt ¶

func JoinInt(ints []int64) string

JoinInt converts a slice of ints to a comma separated string. Useful for inserting into a query without the option of parameterization.

func Range ¶

func Range(start, end int) []int

Range creates an []int counting at "start" up to (and including) "end".

func RemoveString ¶

func RemoveString(list []string, s string) (out []string)

RemoveString removes any occurrence of a string from a slice.

func RepeatString ¶

func RepeatString(s string, n int) (r []string)

RepeatString returns a slice with the string s reated n times.

func StringMap ¶

func StringMap(list []string, f func(string) string) []string

StringMap returns a list strings where each item in list has been modified by f

func UniqInt64 ¶

func UniqInt64(list []int64) []int64

UniqInt64 removes duplicate entries from list. The list does not have to be sorted.

func UniqString ¶

func UniqString(list []string) []string

UniqString removes duplicate entries from list.

func UniqueMergeSlices ¶

func UniqueMergeSlices(s [][]int64) (result []int64)

UniqueMergeSlices takes a slice of slices of int64s and returns an unsorted slice of unique int64s.

Source Files ¶

sets.go sliceutil.go