Unlike many other programming languages, Go doesn't provide helper functions for slices in it's core. I felt like this was quite an essential feature and there weren't any libraries out there that would do this, so I made my own. The functions are the same as the in the Go's official "strings" package, but you can use them on slices.

Open your terminal and type:

go get github.com/merkur0/go-slices

Then, import this package in your .go file like this:

import (
  "github.com/merkur0/go-slices"
)

And that's it!

slices.FunctionName(parameters)

Example:

mySlice := []int{1, 2, 3}
slices.ContainsInt(mySlice, 3) // Returns "true"

Returns true if the slice contains the item and false if it doesn't. Example:

mySlice := []float32{1.1, 1.2, 1.3, 1.4, 1.5}
slices.ContainsFloat32(myArr, 1.2) // returns true
slices.ContainsFloat32(myArr, 2.3) // returns false

Returns the number of instances of the item within the slice. Example:

mySlice := []int{1, 1, 1, 2, 1}
slices.CountInt(mySlice, 1) // returns 4
slices.CountInt(mySlice, 3) // returns 0

Returns a copy of the slice where the item with the index (second parameter) is deleted. Example:

mySlice := []int{1, 2, 3, 4, 5}
slices.DeleteInt(mySlice, 0) // returns [2, 3, 4, 5]

Returns the index of the first instance of the second parameter in the slice, or -1 if item is not present in the slice. Example:

mySlice := []int{4, 1, 5}
slices.IndexInt(mySlice, 5) // returns 2

Returns the index of the last instance of the second parameter in the slice, or -1 if item is not present in the slice. Example:

mySlice := []int{1, 2, 1, 1, 4}
slices.LastIndexInt(mySlice, 1) // returns 3

Returns a copy of the slice with all its items modified according to the mapping function. Example:

myFunc := func(number int) int {
    return number * 2
}
mySlice := []int{1, 2, 3, 4}

slices.MapInt(mySlice, myFunc) // returns [2, 4, 6, 8]

Returns the largest element in the slice. Example:

mySlice := []int{1, 2, 3, 4}

slices.MaxInt(mySlice) // returns 4

Returns the smallest element in the slice. Example:

mySlice := []int{1, 2, 3, 4}

slices.MinInt(mySlice) // returns 1

Returns a copy of the slice with it's last item removed. Example:

mySlice := []int{1, 2, 3, 4}
slices.PopInt(mySlice) // returns [1, 2, 3]

Returns a copy of the slice where the first instance of the old item (second parameter) is replaced with the new item (third parameter). Example:

mySlice := []int{1, 1, 3, 5, 1}
slices.ReplaceInt(mySlice, 1, 0) // returns [0, 1, 3, 5, 1]

Returns a copy of the slice where every instance of the old item (second parameter) is replaced with the new item (third parameter) and returns the new slice. Example:

mySlice := []int{1, 1, 3, 5, 1}
slices.ReplaceAllInt(mySlice, 1, 0) // returns [0, 0, 3, 5, 1]

Returns a copy of the slice with it's first item removed. Example:

mySlice := []int{1, 2, 3}
slices.ShiftInt(mySlice) // returns [2, 3]