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When to use references vs. pointers
...l semantics of pointers versus references, but how should I decide when it is more-or-less appropriate to use references or pointers in an API?
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C/C++ check if one bit is set in, i.e. int variable
Is there such a way to check if bit 3 in temp is 1 or 0 without bit shifting and masking.
21 Answers
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How to add elements of a Java8 stream into an existing List
...avadoc of Collector shows how to collect elements of a stream into a new List. Is there an one-liner that adds the results into an existing ArrayList?
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Use Visual Studio web.config transform for debugging [duplicate]
I want to use the Web.config transformation that works fine for publish also for debugging.
5 Answers
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Direct casting vs 'as' operator?
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string s = (string)o; // 1
Throws InvalidCastException if o is not a string. Otherwise, assigns o to s, even if o is null.
string s = o as string; // 2
Assigns null to s if o is not a string or if o is null. For this reason, you cannot use it with value types (the operator could ne...
Are there benefits of passing by pointer over passing by reference in C++?
...y pointer allows you to explicitly see at the call site whether the object is passed by value or by reference:
// Is mySprite passed by value or by reference? You can't tell
// without looking at the definition of func()
func(mySprite);
// func2 passes "by pointer" - no need to look up function ...
Why do most C developers use define instead of const? [duplicate]
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There is a very solid reason for this: const in C does not mean something is constant. It just means a variable is read-only.
In places where the compiler requires a true constant (such as for array sizes for non-VLA arrays), usin...
How can I make a UITextField move up when the keyboard is present - on starting to edit?
... standard way to prevent the TextFields from being covered by the keyboard is to move the view up/down whenever the keyboard is shown.
Here is some sample code:
#define kOFFSET_FOR_KEYBOARD 80.0
-(void)keyboardWillShow {
// Animate the current view out of the way
if (self.view.frame.orig...
Benefits of inline functions in C++?
What is the advantages/disadvantages of using inline functions in C++? I see that it only increases performance for the code that the compiler outputs, but with today's optimized compilers, fast CPUs, huge memory etc. (not like in the 1980< where memory was scarce and everything had to fit in 100KB ...
Is there a concurrent List in Java's JDK?
How can I create a concurrent List instance, where I can access elements by index? Does the JDK have any classes or factory methods I can use?
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