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ptr's Introduction

ptr - work with pointers to basic Go types inline

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go get github.com/kevinpfab/ptr

In Go, to get a pointer to a basic literal you need to first set the literal to a variable.

var namePtr *string
name := "Octocat"
namePtr = &name

The ptr package let's you do this inline, which is particularly useful when working with pointer heavy structs.

type Employee struct {
    FirstName *string
    LastName *string
    HourlyRate *float32
}

github := &Employee{
    FirstName: ptr.String("Octo"),
    LastName: ptr.String("Cat"),
    HourlyRate: ptr.Float32(15.00),
}

All basic types and time.Time are supported. Other commonly pointered types in the standard library would be welcome additions.

An extra helper S(v interface{}) string is defined to safely get the string representation of the underlying value of a pointer.

var namePtr *string
fmt.Println(ptr.S(namePtr)) // Writing fmt.Println(*namePtr) would crash the program.
// Output: <nil>

name := "Octocat"
namePtr = &name
fmt.Println(ptr.S(namePtr))
// Output: Octocat

Package ptr is MIT licensed.

ptr's People

Contributors

kevinpfab avatar milagre avatar

Stargazers

vokinneberg avatar Kollan House avatar Joel Sleppy avatar  avatar Wonyoung Ju avatar

Watchers

 avatar Joel Sleppy avatar

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