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Move an array element from one array position to another
I'm having a hard time figuring out how to move an array element. For example, given the following:
31 Answers
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npm - how to show the latest version of a package
How do I use npm to show the latest version of a module? I am expecting something like npm --latest express to print out v3.0.0 .
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Stretch child div height to fill parent that has dynamic height
As it can be seen in the following fiddle, I have two div s, contained in a parent div that have stretched to contain the big div, my goal is to make those child div s equal in height.
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What does string::npos mean in this code?
..."not found"); // assume it returns npos
if (idx == std::string::npos) { // ERROR: comparison might not work
...
}
One way to avoid this error is to check whether the search fails directly:
if (s.find("hi") == std::string::npos) {
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}
However, often you need the index of the matching character...
Final arguments in interface methods - what's the point?
...entation that its value
will not change and can help avoid
programming errors.
However, a final modifier on a method parameter is not mentioned in the rules for matching signatures of overridden methods, and it has no effect on the caller, only within the body of an implementation. Also, as no...
What is move semantics?
...hape> a(new Triangle);
unique_ptr<Shape> b(a); // error
unique_ptr<Shape> c(make_triangle()); // okay
The second line fails to compile, because a is an lvalue, but the parameter unique_ptr&& source can only be bound to rvalues. This is exactly what we wante...
C++ catch blocks - catch exception by value or reference? [duplicate]
...yException which inherits from CustomException and overrides items like an error code. If a MyException type was thrown your catch block would cause it to be converted to a CustomException instance which would cause the error code to change.
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How to compare variables to undefined, if I don’t know whether they exist? [duplicate]
...ere.
}
Note that typeof always returns a string, and doesn't generate an error if the variable doesn't exist at all.
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Apache shows PHP code instead of executing it
...member the extension but I think it's .so.
Also check in /var/log/apache2/error.log to see if you have any other errors.
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Can I initialize a C# attribute with an array or other variable number of arguments?
Is it possible to create an attribute that can be initialized with a variable number of arguments?
7 Answers
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