solominh

<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android">
    <item android:state_enabled="false"
          android:color="@color/flat_disabled_text"/>
    <item android:color="@color/flat_normal_text"/>
</selector>

solominh

    /**
     * Convenience method to create a MediaPlayer for a given resource id.
     * On success, {@link #prepare()} will already have been called and must not be called again.
     * <p>When done with the MediaPlayer, you should call  {@link #release()},
     * to free the resources. If not released, too many MediaPlayer instances will
     * result in an exception.</p>
     *
     * @param context the Context to use
     * @param resid the raw resource id (<var>R.raw.&lt;something></var>) for
     *              the resource to use as the datasource

solominh

/*
 * Copyright (C) 2006 The Android Open Source Project
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software

solominh

class Employee {
 
    constructor(name) {
        this._name = name;
    }
 
    doWork() {
        console.log(`${this._name} is working`);
    }
 

solominh

let a = [1, 2, 3, 4, 5]

for (let v of a) {
    if (v == 3) {
        a.splice(0, 2); // remove 2 element from index 0
        a = undefined; // for..of will have arrayname =a => undefined assignment will not affect for..of
    }
    console.log(v); 
}
console.log(a) // undefined

solominh

function copy(obj) {
    var copy = Object.create(Object.getPrototypeOf(obj));
    var propNames = Object.getOwnPropertyNames(obj);

    propNames.forEach(function (name) {
        var desc = Object.getOwnPropertyDescriptor(obj, name);
        Object.defineProperty(copy, name, desc);
    });

    return copy;

solominh

class Person {

    constructor(name) {
        this.name = name;
    }

    static realStaticMethod() {
        console.log('static method');
    }
}

solominh

function Person(name) {
    this.name = name;
}
Person.prototype.staticProperty = 10;

var john = new Person('john');
console.log(john.staticProperty); // 10
john.staticProperty = 5;
console.log(Person.staticProperty) // 10

solominh

class Person():
    static_property = 10

    def __init__(self, name):
        self.name = name


john = Person('john')
print(john.static_property)  # 10 => find in prototype
john.static_property = 5  # Create new own property

solominh

public class StaticProperty {
    public static class Person {

        static int staticProperty = 10;
        String name;

        public Person(String name) {
            this.name = name;
        }