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BigDecimal - to use new or valueOf
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Those are two separate questions: "What should I use for BigDecimal?" and "What do I do in general?"
For BigDecimal: this is a bit tricky, because they don't do the same thing. BigDecimal.valueOf(double) will use the canonical String representation of the double value passed in...
How does JavaScript .prototype work?
... head around this prototype-based programming, does any one know how this works?
26 Answers
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Getting the exception value in Python
...xception classes will have an args attribute. Often, args[0] will be an error message.
It should be noted that just using str will return an empty string if there's no error message whereas using repr as pyfunc recommends will at least display the class of the exception. My take is that if you're p...
Serializing PHP object to JSON
So I was wandering around php.net for information about serializing PHP objects to JSON, when I stumbled across the new JsonSerializable Interface . It's only PHP >= 5.4 though, and I'm running in a 5.3.x environment.
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How can I find WPF controls by name or type?
I need to search a WPF control hierarchy for controls that match a given name or type. How can I do this?
18 Answers
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What is a wrapper class?
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In general, a wrapper class is any class which "wraps" or "encapsulates" the functionality of another class or component. These are useful by providing a level of abstraction from the implementation of the underlying class or component; for example, wrapper classes that wrap COM...
Why does Java have transient fields?
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The transient keyword in Java is used to indicate that a field should not be part of the serialization (which means saved, like to a file) process.
From the Java Language Specification, Java SE 7 Edition, Section 8.3.1.3. transient Fields:
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Should unit tests be written for getter and setters?
Are we supposed to write tests for our getters and setters or is it overkill?
13 Answers
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Why do we need Abstract factory design pattern?
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Abstract Factory is a very central design pattern for Dependency Injection (DI). Here's a list of Stack Overflow questions where application of Abstract Factory has been accepted as the solution.
To the best of my understanding, these qu...
Why should I implement ICloneable in c#?
...ere's no clear indication from the interface whether your Clone method performs a "deep" or "shallow" clone.
See this blog post from Brad Abrams back in 2003(!) for more information.
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