identity: a variable holds the same instance as another variable. equality: two distinct objects can be used interchangeably. they often have the same id. Identity For example: Integer a = new Integer(1); Integer b = a; a is identical to b. In Java, identity is tested with ==. For example, if( a == b ). … Read more
You could use Object.assign and a spread syntax … for creating a single object with the given array with objects. var array = [{ name1: “value1” }, { name2: “value2” }], object = Object.assign({}, …array); console.log(object);
You can just iterate over the keys and invoke the setters. I prefer this, because it will catch if you pass an invalid key. class Foo attr_accessor :name, :age, :email, :gender, :height def initialize params = {} params.each { |key, value| send “#{key}=”, value } end end foo = Foo.new name: ‘Josh’, age: 456 foo.name … Read more
Yep – works in all loops. const myObject = { propA: ‘foo’, propB: ‘bar’ }; for (let propName in myObject) { console.log(propName); if (propName !== ‘propA’) { continue; } else if (propName === ‘propA’) { break; } } (By loops I mean for, for…in, for…of, while and do…while, not forEach, which is actually a function … Read more
A lot of the difference comes down to pointers and addressing. In C++ยน pointers to functions and pointers to objects are strictly separate kinds of things. C++ requires that you can convert a pointer to any object type into a pointer to void, then convert it back to the original type, and the result will … Read more
Java Language Architect Brian Goetz has recently talked about adding destructuring to an upcoming version of Java. Look for the Sidebar: pattern matching chapter in his paper: Towards Better Serialization I strongly dislike the current proposal of the syntax, but according to Brian your use case will look like the following (please note, that at … Read more
def companion[T](name : String)(implicit man: Manifest[T]) : T = Class.forName(name + “$”).getField(“MODULE$”).get(man.erasure).asInstanceOf[T] val result = companion[SomeTrait](“SomeObject”).someMethod
The IFRAME element is part of the upcoming HTML5 standard. Also, HTML5 is developed by the major browser vendors out there (Mozilla, Opera, Safari, IE), that basically makes a guarantee that we will have an IFRAME element in the foreseeable future. Some of them have support for some HTML5 elements already, like AUDIO and VIDEO … Read more
In computer science, in the context of data storage and transmission, serialization is the process of converting a data structure or object into a sequence of bits so that it can be stored in a file, a memory buffer, or transmitted across a network connection link to be “resurrected” later in the same or another … Read more