This Angular syntax for defining a type is confusing to me
orderedEvents: { [sequence: number]: Event }
This Angular syntax for defining a type is confusing to me
orderedEvents: { [sequence: number]: Event }
When you use this syntax, you are defining an object where the keys are numerical values and the values are Event objects:
{
0: SomeEvent
}
It is important to understand that even though the keys in this object are numbers, it should not be confused with an array as it is still an object.
In simple terms, the variable sequencedEventItems is essentially a dictionary or an object. In this dictionary, the keys or properties are numbers and the values associated with these keys are of type Event.
If you want to delve deeper into TypeScript interfaces and Indexable Types, you can find more information here.
To provide a visual representation, this is how the structure of the above-described object may look like:
{
sequencedEventItems: {
1: EventA,
2: EventB,
3: EventC,
// and so on
},
}
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