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Why is “using namespace std;” considered bad practice?
...thout problems. But one day you upgrade to a new version of Foo 2.0, which now offers a function called Quux(). Now you've got a conflict: Both Foo 2.0 and Bar import Quux() into your global namespace. This is going to take some effort to fix, especially if the function parameters happen to match.
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How to format strings using printf() to get equal length in the output?
... of whatever length the two strings header1 and header2 may have.
I don't know if all implementations have the %n but Solaris and Linux do.
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Is there a range class in C++11 for use with range based for loops?
...ace. range-v3 was always sort-of the reference implementation I'd say. But now I believe the basic range stuff has also recently been voted into C++20, so we will indeed get it in std:: soon! :-)
– Ela782
Jan 3 '19 at 11:56
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What is an efficient way to implement a singleton pattern in Java? [closed]
...s to be final. In this case, I've used the final keyword to let the users know it is final. Then you need to make the constructor private to prevent users to create their own Foo. Throwing an exception from the constructor prevents users to use reflection to create a second Foo. Then you create a pr...
Long press on UITableView
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Don't forget, gesture recognizers can now be added to UI elements directly in Interface Builder and connected through an IBAction method, so this answer is even easier ;-) (just remember to attach the recognizer to the UITableView, not the UITableViewCell...)
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How can I make my own event in C#?
... }
static void Main(string[] args)
{
//Now lets test the event contained in the above class.
MyClass MyObject = new MyClass();
MyObject.OnMaximum += new MyEventHandler(MaximumReached);
for(int x = 0; x <= 15; x++)
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Python 3 ImportError: No module named 'ConfigParser'
... A moving target on this one but I use pip3 install mysql-connector. Now available from MySQL for python3 support. release at time of typing is 2.1.3.
– Longmang
Jun 7 '16 at 9:42
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Automatic popping up keyboard on start Activity
...ting the keyboard even if all the controls on my form were disabled. Fixed now. Thank you!
– crowmagnumb
Jul 31 '14 at 18:06
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remove_if equivalent for std::map
...would work, but semantically, people often use for() for iterating over a known range, and while() for an unknown number of loops. Since the range is known in this case (from the beginning, to endIter), for() wouldn't be an unusual choice, and would probably be more common. But again, both would be ...
How might I convert a double to the nearest integer value?
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@Keith: I don't know but I've always been taught to round x.5 up but I can see reasoning to do it up or down for statistics. Thanks for that. PS It's clear to see I'm not in statistics, finance or accounting where this kind of rounding seems ...