39 lines
716 B
Go
39 lines
716 B
Go
package pointer_test
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import (
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"source.toby3d.me/toby3d/hacks/pointer"
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)
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func Example() {
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// NOTE(toby3d): ResponsePayload can hold data in three states:
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//
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// * nil value
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// * zero value: "", 0, false
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// * any valid value: "abc", 42, true
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//
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// So, for support all these states struct must have pointers to basic
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// types.
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type ResponsePayload struct {
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Text *string
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Ok *bool
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Number *int
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}
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// NOTE(toby3d): the old way
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ok := true
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text := "hello, world"
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num := 0
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_ = ResponsePayload{
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Text: &text,
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Ok: &ok,
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Number: &num,
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}
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// NOTE(toby3d): hack-way
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_ = ResponsePayload{
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Text: pointer.Of("hello, world"),
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Ok: pointer.Of(true),
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Number: pointer.Of(0),
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}
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}
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