Sometimes it can be very useful to save previous values of props (or state) in a React component. Perhaps this is easier to be imagined in a class component, but in a functional component, less so. However, we can use the useRef() React hook to achieve that quite
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Using enum values as strictly typed object keys
In TypeScript, it’s often useful to define interfaces or complex (structured) types whose properties (or keys) may only be values of a previously defined enum type. Here’s a good example: an object declaring a set of buttons for a modal dialog. Instead of this… type DialogButtons = {
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