typescript keyof
interface Person {
name: string;
age: number;
location: string;
}
type K1 = keyof Person; // "name" | "age" | "location"
type K2 = keyof Person[]; // "length" | "push" | "pop" | "concat" | ...
type K3 = keyof { [x: string]: Person }; // stringtypeof()
// C# program to illustrate the
// concept of typeof operator
using System;
class GFG {
// Here store Type as a field
static Type a = typeof(double);
// Main method
static void Main()
{
// Display the type of a
Console.WriteLine(a);
// Display the value type
Console.WriteLine(typeof(int));
// Display the class type
Console.WriteLine(typeof(Array));
// Display the value type
Console.WriteLine(typeof(char));
// Display the array reference type
Console.WriteLine(typeof(int[]));
}
}Copyright © 2021 Codeinu
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