illustrating getters and setters

settings-service.ts

import { Injectable } from '@angular/core';
import { Http } from '@angular/http';
import 'rxjs/add/operator/map';

@Injectable()
export class SettingsService {
  _pomLength: number;
  _shortBreakLength: number;
  _longBreakLength: number;

  constructor(public http: Http) {
    _pomLength = 1500;
    _shortBreakLength = 300;
    _longBreakLength = 1800;
  }

  get pomLength(): number {
    return this._pomLength;
  }

  set pomLength(value: number) {
    this._pomLength = value;
  }

  get shortBreakLength(): number {
    return this._shortBreakLength;
  }

  set shortBreakLength(value: number) {
    this._shortBreakLength = value;
  }

  get longBreakLength(): number {
    return this._longBreakLength;
  }

  set longBreakLength(value: number) {
    this._longBreakLength = value;
  }
}