Function in Go that converts an int slice to a custom int slice pointer type

What php editor Xinyi will introduce to you today is a function that converts int slices into custom int slice pointer types in the Go language. In the Go language, slice is a very commonly used data type that can dynamically increase or decrease the number of elements. Sometimes we need to convert a slice to a custom slice pointer type for operation in a function. This article will describe in detail how to achieve this conversion and give sample code for reference. Through studying this article, I believe that everyone will have a deeper understanding of the use of slices in the Go language.

Question content

I want to take an int slice as input to the constructor and return a pointer to the original list, typecasting to my external custom type (type intlist [ ]int).

I can do this:

type intlist []int

func newintlistptr(ints []int) *intlist {
    x := intlist(ints)
    return &x
}

But I can't do this:

type IntList []int

func NewIntListPtr(ints []int) *IntList {
    return &ints
}

// or this for that matter:

func NewIntListPtr(ints []int) *IntList {
    return &(IntList(ints))
}

// or this

func NewIntListPtr(ints []int) *IntList {
    return &IntList(*ints)
}

// or this

func NewIntListPtr(ints *[]int) *IntList {
    return &(IntList(*ints))
}

Is there a sentence that can achieve this?

Solution

You do this:

func NewIntListPtr(ints []int) *IntList {
    return (*IntList)(&ints)
}

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