There are two ways to access properties of an object: Dot notation: something.bar Bracket notation: something[‘bar’] The value between the brackets can be any expression. Therefore, if the property name is stored in a variable, you have to use bracket notation: var something = { bar: ‘foo’ }; var foo = ‘bar’; // both x … Read more
Move them to an array, sort that array, and then use that array for your purposes. Here’s a solution: let maxSpeed = { car: 300, bike: 60, motorbike: 200, airplane: 1000, helicopter: 400, rocket: 8 * 60 * 60 }; let sortable = []; for (var vehicle in maxSpeed) { sortable.push([vehicle, maxSpeed[vehicle]]); } sortable.sort(function(a, b) … Read more
public static object GetPropValue(object src, string propName) { return src.GetType().GetProperty(propName).GetValue(src, null); } Of course, you will want to add validation and whatnot, but that is the gist of it.
The property() function returns a special descriptor object: >>> property() <property object at 0x10ff07940> It is this object that has extra methods: >>> property().getter <built-in method getter of property object at 0x10ff07998> >>> property().setter <built-in method setter of property object at 0x10ff07940> >>> property().deleter <built-in method deleter of property object at 0x10ff07998> These act as … Read more
Properties expose fields. Fields should (almost always) be kept private to a class and accessed via get and set properties. Properties provide a level of abstraction allowing you to change the fields while not affecting the external way they are accessed by the things that use your class. public class MyClass { // this is … Read more
To do this in any ES5-compatible environment, such as Node.js, Chrome, Internet Explorer 9+, Firefox 4+, or Safari 5+: Object.keys(obj).length Browser compatibility Object.keys documentation (includes a method you can add to non-ES5 browsers)
The last two are identical; “atomic” is the default behavior (note that it is not actually a keyword; it is specified only by the absence of nonatomic — atomic was added as a keyword in recent versions of llvm/clang). Assuming that you are @synthesizing the method implementations, atomic vs. non-atomic changes the generated code. If … Read more