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Dependency Injection vs Factory Pattern
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When using a factory your code is still actually responsible for creating objects. By DI you outsource that responsibility to another class or a framework, which is separate from your code.
sha...
What's the difference between passing by reference vs. passing by value?
...on as defined in the CS theory is now obsolete because the technique originally defined as "pass by reference" has since fallen out of favor and is seldom used now.1
Newer languages2 tend to use a different (but similar) pair of techniques to achieve the same effects (see below) which is the primar...
How do I measure separate CPU core usage for a process?
...read. When off, the said percentage is displayed relatively to the CPU overall capacity (i.e. ALL threads - aka all cores).
– 7heo.tk
May 20 '15 at 16:34
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How do I tell Git to ignore everything except a subdirectory?
I want to ignore all files in my repository except those that occur in the bin subdirectory. I tried adding the following to my .gitignore :
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Directory-tree listing in Python
How do I get a list of all files (and directories) in a given directory in Python?
20 Answers
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Regex match everything after question mark?
...sted in.
If the string can contain new lines you may have to use the "dot all" modifier to allow the dot to match the new line character. Whether or not you have to do this, and how to do this, depends on the language you are using. It appears that you forgot to mention the programming language you...
Android Studio - How to Change Android SDK Path
... You guys are mistaken. Android Studio isn't organized like ADT Eclipse at all. And this accepted answer leads to the exact same place as DheeB's answer (which brings you to a place that says: Android SDK location: This location will be used for new projects, and for existing projects that do not ha...
Default constructor vs. inline field initialization
...ference.
However, if you do have explicit constructors, I'd prefer to put all initialization code into those (and chain them) rather than splitting it up between constructors and field initializers.
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How to get domain URL and application name?
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The web application name (actually the context path) is available by calling HttpServletrequest#getContextPath() (and thus NOT getServletPath() as one suggested before). You can retrieve this in JSP by ${pageContext.request.contextPath}.
<p>The co...
Why does C++ need a separate header file?
I've never really understood why C++ needs a separate header file with the same functions as in the .cpp file. It makes creating classes and refactoring them very difficult, and it adds unnecessary files to the project. And then there is the problem with having to include header files, but having to...