Valeriu Paloş vpalos
vpalos
/ enum-keys.ts
Last active
February 25, 2020 06:46
How to use `enum` values as strictly typed object keys in TypeScript.
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| enum DialogButton { | |
| YES = "yes", | |
| NO = "no", | |
| CANCEL = "cancel" | |
| } | |
| interface IDialog { | |
| buttons: { [B in DialogButton]?: boolean }, | |
| callback: (button: DialogButton) => void | |
| } |
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| /** | |
| * A Condition represents the logical test which eventually is used to trigger | |
| * an alarm (e.g. "out-of-comm", "temperature-below-freezing" etc.). This is a | |
| * class, because a Condition can have parameters and it has to manage them. | |
| */ | |
| abstract class AlarmCondition { | |
| /** | |
| * It can be in either "Up" state (good scenario) or "Down" state (bad scenario). | |
| * By default (unless the constructor does something else), it starts as "Up". | |
| */ |
OlderNewer