Take a look at this code snippet:
export type DataViewProps = {
width: number, // in pixels
height: number, // in pixels
data: Data,
};
export class DataView<P extends DataViewProps = DataViewProps>
extends React.Component<P> {
Can you explain the significance of the
<P extends DataViewProps = DataViewProps>Can you explain the significance of the assignment
<P extends DataViewProps = DataViewProps>
In the context of this assignment, = DataViewProps indicates that P will default to DataViewProps if no specific value is provided. This concept is known as default type argument.
For example:
const foo = new DataView<Something>(); // P becomes Something
const bar = new DataView(); // P resolves to DataViewProps
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