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What are unit tests, integration tests, smoke tests, and regression tests?

What are unit tests, integration tests, smoke tests, and regression tests? What are the differences between them and which tools can I use for each of them? ...
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How do I add a ToolTip to a control?

I have some controls that I would like to display a ToolTip for when the mouse is hovering over it. How can I do this? I would like to know how to do this properly in code, but also in the designer (There is a ToolTip component in the toolbox, but I don't quite.. get it). ...
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How to round a number to n decimal places in Java

What I would like is a method to convert a double to a string which rounds using the half-up method - i.e. if the decimal to be rounded is 5, it always rounds up to the next number. This is the standard method of rounding most people expect in most situations. ...
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How to use Java property files?

I have a list of key/value pairs of configuration values I want to store as Java property files, and later load and iterate through. ...
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Creating anonymous objects in php

As we know, creating anonymous objects in JavaScript is easy, like the code below: 12 Answers ...
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SQL “between” not inclusive

I have a query like this: 8 Answers 8 ...
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iPhone viewWillAppear not firing

...ts delegate, then the view{Will,Did}{Appear,Disappear} methods are not invoked. You need to use the navigation controller delegate methods instead: navigationController:willShowViewController:animated: navigationController:didShowViewController:animated: ...
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How do I trim whitespace?

...vide an argument to strip arbitrary characters to any of these functions like this: s = s.strip(' \t\n\r') This will strip any space, \t, \n, or \r characters from the left-hand side, right-hand side, or both sides of the string. The examples above only remove strings from the left-hand and right-h...
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Exiting from python Command Line

...string and not a function -- 'Use Ctrl-D (i.e. EOF) to exit.'. You can check on your interpreter by entering type(exit) In active python what is happening is that exit is a function. If you do not call the function it will print out the string representation of the object. This is the default behav...
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What's wrong with overridable method calls in constructors?

I have a Wicket page class that sets the page title depending on the result of an abstract method. 7 Answers ...