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Why would an Enum implement an Interface?
I just found out that Java allows enums to implement an interface. What would be a good use case for that?
16 Answers
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How can I update a single row in a ListView?
...ormation Michelle.
You can indeed get the right view using View#getChildAt(int index). The catch is that it starts counting from the first visible item. In fact, you can only get the visible items. You solve this with ListView#getFirstVisiblePosition().
Example:
private void updateView(int index){...
Run two async tasks in parallel and collect results in .NET 4.5
...var task1 = Sleep(5000);
var task2 = Sleep(3000);
int[] result = await Task.WhenAll(task1, task2);
Console.WriteLine("Slept for a total of " + result.Sum() + " ms");
}
private async static Task<int> Sleep(int ms)
{
Con...
Why is auto_ptr being deprecated?
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@HowardHinnant interesting doc! it is strange in a sense that if std::sort() is has a specialization for std::unique_ptr to use the move semantic as needed. I wonder why std::sort() can't be specialized for std::auto_ptr to correct the cop...
Unicode Processing in C++
...n 22.4.1.4 "Class template codecvt" - discusses the codecvt class used for converting between character encodings (including UTF-8, UTF-16 and UTF-32). There is more about Unicode support peppered throughout the document, but these seem to be the most critical sections on the subject.
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How to check if an object is an array?
...ts a list of strings, or a single string. If it's a string, then I want to convert it to an array with just the one item so I can loop over it without fear of an error.
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What's wrong with overridable method calls in constructors?
...ideMe();
}
class Child extends Base {
final int x;
Child(int x) {
this.x = x;
}
@Override
void overrideMe() {
System.out.println(x);
}
}
new Child(42); // prin...
PreparedStatement with list of parameters in a IN clause [duplicate]
...t possibleValues = ...
StringBuilder builder = new StringBuilder();
for( int i = 0 ; i < possibleValue.size(); i++ ) {
builder.append("?,");
}
String stmt = "select * from test where field in ("
+ builder.deleteCharAt( builder.length() -1 ).toString() + ")";
PreparedStateme...
How to combine date from one field with time from another field - MS SQL Server
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This saved me! I was converting both to chars and then concating and then back to DATETIME, but then I couldn't index it, because SQL said it was non-deterministic. This apparently IS deterministic!!! THANK !!! YOU !!!
– eid...
CSS text-transform capitalize on all caps
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Convert with JavaScript using .toLowerCase() and capitalize would do the rest.
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