大约有 40,000 项符合查询结果（耗时：0.0631秒） [XML]
Why is it not possible to extend annotations in Java?
...nnotation belongs to a category?
Try this:
@Target(ElementType.ANNOTATION_TYPE)
public @interface Category {
String category();
}
@Category(category="validator")
public @interface MyFooBarValidator {
}
As you can see, you can easily group and categorize annotations without undue pain using...
Benefits of prototypal inheritance over classical?
... you to copy the properties of an arbitrary number of objects. For example _.extend does just this.
Of course many programmers don't consider this to be true inheritance because instanceof and isPrototypeOf say otherwise. However this can be easily remedied by storing an array of prototypes on ever...
How to configure socket connect timeout
...code.. however the !success isnt the correct condition. Instead, add if (!_socket.Connected) and it works much better. Ill give it a +1 for the less is more aspect.
– TravisWhidden
Jan 28 '11 at 19:01
...
What are the benefits of functional programming? [closed]
... the same time is called parallelism. See en.wikipedia.org/wiki/Concurrency_(computer_science)
– Lambda Fairy
Dec 9 '11 at 1:28
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Where can I get a “useful” C++ binary search algorithm?
...that is compatible with the C++ STL containers, something like std::binary_search in the standard library's <algorithm> header, but I need it to return the iterator that points at the result, not a simple boolean telling me if the element exists.
...
What is the difference between Scala's case class and class?
...case Node(left, EmptyLeaf) => println("Can be reduced to "+left)
case _ => println(treeA+" cannot be reduced")
}
// Pattern matches can be safely done, because the compiler warns about
// non-exaustive matches:
def checkTree(t: Tree) = t match {
case Node(EmptyLeaf, Node(left, right)) =&g...
UITextField text change event
...
Add _ before textField in textFieldDidChange like this: func textFieldDidChange(textField: UITextField) { ... }
– Makalele
Jan 2 '17 at 23:32
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Multiple line code example in Javadoc comment
...ls to parse it correctly:( At least this is what I see with Oracle JDK1.7.0_45 javadoc implementation.
– Male
Jan 3 '14 at 16:14
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show 6 mo...
How do I sort an NSMutableArray with custom objects in it?
...OrderedSame, however in my code I though an exception.
NSArray *sorted = [_scores sortedArrayUsingComparator:^(id obj1, id obj2){
if ([obj1 isKindOfClass:[Score class]] && [obj2 isKindOfClass:[Score class]]) {
Score *s1 = obj1;
Score *s2 = obj2;
if (s1.points &g...
Cannot insert explicit value for identity column in table 'table' when IDENTITY_INSERT is set to OFF
...e like this so that you can specify your own identity values.
SET IDENTITY_INSERT Table1 ON
INSERT INTO Table1
/*Note the column list is REQUIRED here, not optional*/
(OperationID,
OpDescription,
FilterID)
VALUES (20,
'Hierachy Update',
...