Objects and Data Structures

class Circle {
  public radius: number

  public constructor(radius: number) {
    this.radius = radius
  }
}

class Circle {
  public constructor(private readonly _radius: number) {}
}

class Foo {
  private readonly bar: number

  private baz(): number {
    ...
  }
}

class Foo {
  private readonly _bar: number

  private _baz(): number {
    ...
  }
}