33 lines
483 B
Go
33 lines
483 B
Go
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package hub_test
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import (
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"fmt"
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"github.com/cenk/hub"
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)
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// Different event kinds
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const (
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happenedA hub.Kind = iota
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happenedB
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happenedC
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)
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// Our custom event type
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type EventA struct {
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arg1, arg2 int
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}
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// Implement hub.Event interface
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func (e EventA) Kind() hub.Kind { return happenedA }
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func Example() {
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hub.Subscribe(happenedA, func(e hub.Event) {
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a := e.(EventA) // Cast to concrete type
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fmt.Println(a.arg1 + a.arg2)
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})
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hub.Publish(EventA{2, 3})
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// Output: 5
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}
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