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NSUserDefaults removeObjectForKey vs. setObject:nil
...sting, in Swift, when I type set(nil, forKey:...), and use "jump to definition", it takes me to the URL setter. The comment for that function says "-setURL:forKey is equivalent to -setObject:forKey: except that the value is archived to an NSData." This could explain why it is misbehaving - since the...
Scala list concatenation, ::: vs ++
..., 3) ++ "ab"
res0: List[AnyVal] = List(1, 2, 3, a, b)
++ is also easy to mix up with +:
scala> List(1, 2, 3) + "ab"
res1: String = List(1, 2, 3)ab
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What is the difference between cout, cerr, clog of iostream header in c++? When to use which one?
...yone explain to me, through simple programs and illustrate a perfect situation on when to use which one?
7 Answers
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How to get image height and width using java?
Is there any other way besides using ImageIO.read to get image height and width?
13 Answers
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Effective way to find any file's Encoding
Yes is a most frequent question, and this matter is vague for me and since I don't know much about it.
9 Answers
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Exception messages in English?
We are logging any exceptions that happen in our system by writing the Exception.Message to a file. However, they are written in the culture of the client. And Turkish errors don't mean a lot to me.
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What's the best UI for entering date of birth? [closed]
... usually you also have advanced and non-advanced users I suggest a combination of text input and datepicker.
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Example of UUID generation using Boost in C++
...st/uuid/uuid_generators.hpp> // generators
#include <boost/uuid/uuid_io.hpp> // streaming operators etc.
int main() {
boost::uuids::uuid uuid = boost::uuids::random_generator()();
std::cout << uuid << std::endl;
}
Example output:
7feb24af-fc38-44de-bc38-04...
Access Asset Catalog programmatically
...log, you only need to access the name of the asset group without any extensions.
So, if you add an image named @"my-button@2x.png" to the Asset Catalog, it will create an asset group called my-button.
Now, all you have to do is access the image like so:
// Objective-C
[UIImage imageNamed:@"my-but...
If vs. Switch Speed
... by syntax so can generate "switch" like statements internally that have a mix of ranges, single targets, etc -- and they can (and do) do this for both switch and if..else statements.
Anyhoo, an extension to Konrad's answer is that the compiler may generate a jump table, but that's not necessarily ...