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When should you use constexpr capability in C++11?
...hat can be evaluated down to a constant while maintaining good readability and allowing slightly more complex processing than just setting a constant to a number.
It basically provides a good aid to maintainability as it becomes more obvious what you are doing. Take max( a, b ) for example:
templat...
Python: print a generator expression?
...rn the generator expression into a list comprehension. It's the same thing and calling list() on it. So the way to make a generator expression into a list is to put brackets around it.
Detailed explanation:
A generator expression is a "naked" for expression. Like so:
x*x for x in range(10)
Now,...
Why can I use a function before it's defined in JavaScript?
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The function declaration is magic and causes its identifier to be bound before anything in its code-block* is executed.
This differs from an assignment with a function expression, which is evaluated in normal top-down order.
If you changed the example to sa...
Are global variables in PHP considered bad practice? If so, why?
...l way. I generally have a variable that contains the system configuration, and when I nead to access this variable in a function, I do global $var; .
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PHP - include a php file and also send query parameters
...age from my php script based on certain conditions. I have an if condition and am doing an "include" if the condition is satisfied.
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Why does the lock object have to be static?
... a private static readonly object for locking in multi threading.
I understand that private reduces the entry points to the locking object by tightening the encapsulation and therefore access to the most essential.
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Select 50 items from list at random to write to file
So far I have figured out how to import the file, create new files, and randomize the list.
4 Answers
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How to obtain the last path segment of a URI
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I was searching for Android's android.net.Uri (not java.net.URI) and ended up here. If you're using that instead, there's a method there called getLastPathSegment() which should do the same thing. :)
– pm_labs
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Best way to work with transactions in MS SQL Server Management Studio
Let's say I have an SQL statement that's syntactically and semantically correct so it executes.
2 Answers
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Comparing Timer with DispatcherTimer
what is a difference between System.Windows.Forms.Timer() and System.Windows.Threading.DispatcherTimer() ? In which cases, we should use them? any best practices ?
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