ptr

Simple pointer helpers for Go

Obtaining pointer to the value

Simply pass the value to the To function, the type will be inferred by the Go compiler.

p := ptr.To(float32(0.5)) // p is *float32 pointing to the value 0.5

Retrieving value designated by pointer

To retrieve the value designated by pointer simply pass the pointer to From function. If the pointer might be nil you can supply optional default value as well. if the pointer is nil and default value isn't provided, From will panic.

// panics
_ = ptr.From((*float32)(nil))

var vv = float32(0.5)
value = ptr.From(&vv) // value = float32(0.5)
value = ptr.From((*float32)(nil), 0.7) // value = float32(0.7)