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Random data in Unit Tests?
...o writes unit tests for objects which fill their fields with random data. His reason is that it gives a wider range of testing, since it will test a lot of different values, whereas a normal test only uses a single static value.
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What is the difference between float and double?
I've read about the difference between double precision and single precision. However, in most cases, float and double seem to be interchangeable, i.e. using one or the other does not seem to affect the results. Is this really the case? When are floats and doubles interchangeable? What are the d...
Using a strategy pattern and a command pattern
...lementation details from their calling classes. The only difference I can discern is that the Strategy pattern takes in parameters for execution, while the Command pattern doesn't.
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In Java, what does NaN mean?
...that tries to shrink a double down to a desired number. The output I get is NaN .
11 Answers
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In the shell, what does “ 2>&1 ” mean?
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File descriptor 1 is the standard output (stdout).
File descriptor 2 is the standard error (stderr).
Here is one way to remember this construct (although it is not entirely accurate): at first, 2>1 may look like a good way to redirect stde...
Data access object (DAO) in Java
...ough a document and I came across a term called DAO . I found out that it is a Data Access Object. Can someone please explain me what this actually is?
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Age from birthdate in python
... an age in python from today's date and a persons birthdate? The birthdate is a from a DateField in a Django model.
17 Ans...
What's the difference between `raw_input()` and `input()` in Python 3?
What is the difference between raw_input() and input() in Python 3?
6 Answers
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Segue to another storyboard?
Is it possible to segue from one storyboard to another, or to embed a storyboard in a view controller in another storyboard? I need to place a UITabBarController in a UINavigationController , and I'd like to keep them nice and separate.
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What is the point of “final class” in Java?
...are the whole class as final . I cannot think of anything where I'd use this.
22 Answers
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