Tip Bank

Question: I have a number of datawindows in a window. In a post-construct event I am making a call to another datawindow. Every so often when I open the window

Question: What does the modulus (%) operator do? Answer: The modulus operator returns the remainder of a division operation. For example, 5%2 equals 1 because dividing 5 by 2 gives

Question: If I include a .js file using the src attribute of a script tag and then I need to change the content of the .js file (perhaps to correct

Question: How do I make an alert box pop up 10 seconds after the page loads? Answer: You can display an alert a certain length of time after the page

You can generate random numbers in JavaScript using the Math.random() method. This function returns a fractional random number between 0 and 1. Unlike other languages, JavaScript will initialize a random

Consider the following program: class Exception {}; int main() { try { throw Exception(); // where is the exception stored? } catch( Exception & ex) // catch by reference {}

The terms heap and free-store are used interchangeably when referring to dynamically allocated objects. Are there any differences between the two? Technically, free-store is an abstract term referring to unused

Suppose you have an application that reads input from the keyboard. How can you detect whether alphabetic data is being entered into an integer field from a cin statement? The

Suppose you have a class called A, which doesn’t have a default constructor, and you want to embed an instance of this class as a member of another class, B: