PhoneGap is a software development framework by Adobe System, which is used to develop mobile applications. PhoneGap produces apps for all popular mobile OS platforms such as iOS, Android, BlackBerry, and Windows Mobile OS etc.HTML5 Audio support is not consistent across different devices due to codec licensing issues and OS ... Read More

While logging in i.e. online, you need to first authenticate against the server and if it works, store the username and a hashed password in the database.If you can find the account in the database, then you need to generate a new hash, only if the user has changed the ... Read More

Python expects you to not mutate data when it returns some data. Tuples are also faster than lists. Tuples are generally used where order and position are meaningful and consistant. So for example, if you have a database driver in python and query for some data, you'll likely get back ... Read More

Yes, a Python dictionary is thread safe. Actually, all built-ins in python are thread safe. You can read moreabout this in the documentation: https://docs.python.org/3/glossary.html#term-global-interpreter-lock

There are similar rules for native mobile apps and application. Only domain needs are to be added to white list in PhoneGap or Cardova.The device acts as a server and can access content from URL .If PhoneGap is used then domains are added to whitelist or a wildcard.While dealing with ... Read More

C++ has header and .ccp files for separating the interface from the implementation. The header files declare "what" a class (or whatever is being implemented) will do, ie the API of the class, kind of like an interface in Java. The cpp file on the other hand defines "how" it ... Read More

The pop() method is used to remove the object at the top of this stack and returns that object as the value of this function. Example import java.util.*; public class StackDemo { public static void main(String args[]) { Stack ... Read More

Actually, MySQL allows us to set PRIMARY KEY on multiple columns. The advantage of doing this is that we can work on multiple columns as a single entity. Example We have created the table allotment by defining composite PRIMARY KEY on multiple columns as follows − mysql> Create table ... Read More

You can compare Strings using compareTo() method or, equals() method or, or == operator. Following example demonstrates how to initialize and compare strings in Java. Example Live Demo public class StringDemo { public static void main(String[] args) { String ... Read More

We know that MySQL RAND() returns a random floating point value between the range of 0 and 1. It will generate two different random numbers if we will call the RAND() function, without seed, two times in the same query. Following example will make it clearer − Example mysql> ... Read More