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LL5-enums_anonymous.ts
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LL5-enums_anonymous.ts
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enum TodoState {
New = 1,
Active,
Complete,
Deleted
}
//above means
// New = 1,
// Active =2,
// Complete =3,
// Deleted= 4
interface TodoA {
nameA: String;
state: TodoState;
}
var todoA: TodoA = {
nameA: "pitir",
state: TodoState.New
}
console.log(TodoState.Complete);
console.log(TodoState[3]);
// enums are used to define and access key and values interchangeably as static values.
/////// anonymous type - defining the simple interface in the definition of the variable
var todox: { name: string };
//todox = { age: 41 }; // gives error because, it expects a name with the type of string
todox = { name: 'pitir' }; // this is ok.
// below union types can be done with anonymous
function totalLength5(x: any[], y: string): number {
let total: number = x.length + y.length;
return total;
}
// here anonymous
function totalLength6(x: { length: number }, y: { length: number }): number {
let total: number = x.length + y.length;
return total;
}
totalLength6([1, 2], 'ali');