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Delegates in swift?
...e:class {
func myVCDidFinish(_ controller: FooTwoViewController, text: String)
}
Step2: Declare the delegate in the sending class (i.e. UIViewcontroller)
class FooTwoViewController: UIViewController {
weak var delegate: FooTwoViewControllerDelegate?
[snip...]
}
Step3: Use the dele...
How can I remove the search bar and footer added by the jQuery DataTables plugin?
...n for each column, like in this example :datatables.net/release-datatables/extras/FixedColumns/… . Be aware!
– Janis Peisenieks
Apr 17 '13 at 10:45
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How to convert a unix timestamp (seconds since epoch) to Ruby DateTime?
...strptime can handle seconds since epoch. The number must be converted to a string:
require 'date'
DateTime.strptime("1318996912",'%s')
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Convert Long into Integer
...;
public class DateFormatSampleCode {
public static void main(String[] args) {
long longValue = 1223321L;
int longTointValue = toIntExact(longValue);
System.out.println(longTointValue);
}
}
...
Can someone explain the traverse function in Haskell?
...user IDs to usernames looks like:
mapUserIDsToUsernames :: (Num -> IO String) -> [Num] -> IO [String]
mapUserIDsToUsernames fn ids = traverse fn ids
There's also a function called mapM:
mapM :: (Traversable t, Monad m) => (a -> m b) -> t a -> m (t b)
Any use of mapM can...
Can attributes be added dynamically in C#?
...
Why do you need to? Attributes give extra information for reflection, but if you externally know which properties you want you don't need them.
You could store meta data externally relatively easily in a database or resource file.
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Add string in a certain position in Python
...tion in Python that I can use to insert a value in a certain position of a string?
8 Answers
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LINQ order by null column where order is ascending and nulls should be last
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The solution for string values is really weird:
.OrderBy(f => f.SomeString == null).ThenBy(f => f.SomeString)
The only reason that works is because the first expression, OrderBy(), sort bool values: true/false. false result go first...
Task not serializable: java.io.NotSerializableException when calling function outside closure only o
...the outer class, you can't do it. But FileWriter can be constructed from a String or a File, both of which are Serializable. So refactor your code to construct a local FileWriter based on the filename from the outer class.
– Trebor Rude
Jul 23 '15 at 16:10
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Differences between Java 8 Date Time API (java.time) and Joda-Time
...er to use getDayOfYear() instead of get(DAY_OF_YEAR). This causes a lot of extra methods compared with java.util.Calendar (although latter is not type-safe at all due to excessive use of ints).
Performance
See the other answer by @OO7 pointing to the analysis of Mikhail Vorontsov although point 3 ...