Package pointer contains helper routines for simplifying the creation of optional fields of basic type.
Starting with Go 1.26, the built-in new function supports expressions:
p := new(42) or &Age: new(calculateAge()).
This replaces all helpers like pointer.Of[Value](v) or type-specific pointer.Int(1).
No need to use this package anymore — copy the generics version locally only if stuck on Go 1.18–1.25.
With the advent of generics in go 1.18, using this library in your code is likely to be unwarranted, I recommend that you make a small local copy of this library, for example:
Put the code below in the file: internal/pointer/pointer.go and use it at
your own pleasure.
package pointer
// Of is a helper routine that allocates a new any value
// to store v and returns a pointer to it.
func Of[Value any](v Value) *Value {
return &v
}go get github.com/xorcare/pointerStarting with Go 18+, you can use the Of method to get pointers to values of any types.
Examples of using the library are presented on godoc.org and in the source library code.
| Question | Source |
|---|---|
| How to set bool pointer in a struct literal or variable? | var _ *bool = pointer.Bool(true) |
| How to set byte pointer in a struct literal or variable? | var _ *byte = pointer.Byte(1) |
| How to set complex64 pointer in a struct literal or variable? | var _ *complex64 = pointer.Complex64(1.1) |
| How to set complex128 pointer in a struct literal or variable? | var _ *complex128 = pointer.Complex128(1.1) |
| How to set float32 pointer in a struct literal or variable? | var _ *float32 = pointer.Float32(1.1) |
| How to set float64 pointer in a struct literal or variable? | var _ *float64 = pointer.Float64(1.1) |
| How to set int pointer in a struct literal or variable? | var _ *int = pointer.Int(1) |
| How to set int8 pointer in a struct literal or variable? | var _ *int8 = pointer.Int8(8) |
| How to set int16 pointer in a struct literal or variable? | var _ *int16 = pointer.Int16(16) |
| How to set int32 pointer in a struct literal or variable? | var _ *int32 = pointer.Int32(32) |
| How to set int64 pointer in a struct literal or variable? | var _ *int64 = pointer.Int64(64) |
| How to set rune pointer in a struct literal or variable? | var _ *rune = pointer.Rune(1) |
| How to set string pointer in a struct literal or variable? | var _ *string = pointer.String("ptr") |
| How to set uint pointer in a struct literal or variable? | var _ *uint = pointer.Uint(1) |
| How to set uint8 pointer in a struct literal or variable? | var _ *uint8 = pointer.Uint8(8) |
| How to set uint16 pointer in a struct literal or variable? | var _ *uint16 = pointer.Uint16(16) |
| How to set uint32 pointer in a struct literal or variable? | var _ *uint32 = pointer.Uint32(32) |
| How to set uint64 pointer in a struct literal or variable? | var _ *uint64 = pointer.Uint64(64) |
| How to set time.Time pointer in a struct literal or variable? | var _ *time.Time = pointer.Time(time.Now()) |
| How to set time.Duration pointer in a struct literal or variable? | var _ *time.Duration = pointer.Duration(time.Hour) |
© 2019-2020,2022 Vasiliy Vasilyuk xorcare@gmail.com
Released under the BSD 3-Clause License.
