大约有 30,000 项符合查询结果（耗时：0.0488秒） [XML]
Inspect element that only appear when other element is mouse overed/entered
...k on the icon, then click on the tooltip :)
– Šime Vidas
Jul 16 '14 at 20:40
3
...
UICollectionView's cellForItemAtIndexPath is not being called
...ectionView cellForItemAtIndexPath:(NSIndexPath *)indexPath
was not being called was because of the itemSize for the collectionViewFlowLayout's height was too big.
[self.myCollectionViewFlowLayout setItemSize:CGSizeMake(320, 548)];
If I change the height to 410, it will execute cellForItemAtInde...
Interface Builder: What are the UIView's Layout iOS 6/7 Deltas for?
...ke your job a bit easier if you fall into this niche category, and they've called this iOS 6/7 Deltas.
Ok then, what does it do?
Whilst the label in Interface Builder is a bit unclear as to what 'Delta' means in this context, the code contained in the .xib file that corresponds to this feature is ...
Function pointers, Closures, and Lambda
... Lisp, Scheme, ML, or Haskell closure does not create a new function dynamically. Instead it reuses an existing function but does so with new free variables. The collection of free variables is often called the environment, at least by programming-language theorists.
A closure is just an aggreg...
Choice between vector::resize() and vector::reserve()
...eep inserting the elements at the end as you need. The vector will automatically reallocate as needed and will do it more efficiently than the manual way mentioned. The only case where reserve() makes sense is when you have reasonably precise estimate of the total size you'll need easily available i...
What is a Y-combinator? [closed]
...sive function. First you must write your function as a piece of code that calls a pre-existing function, rather than itself:
// Factorial, if func does the same thing as this bit of code...
x == 0 ? 1: x * func(x - 1);
Then you turn that into a function that takes a function to call, and returns...
RRSet of type CNAME with DNS name foo.com. is not permitted at apex in zone bar.com
...
Create an S3 Bucket called bar.com. (The name must be the same as the domain you want to redirect from in order for this to work!)
In the bar.com S3 Bucket go to Properties > Static Website Hosting, select Redirect all requests to another hos...
How to call a method with a separate thread in Java?
let's say I have a method doWork() . How do I call it from a separate thread (not the main thread).
7 Answers
...
Throttling method calls to M requests in N seconds
...eed a component/class that throttles execution of some method to maximum M calls in N seconds (or ms or nanos, does not matter).
...
INSERT statement conflicted with the FOREIGN KEY constraint - SQL Server
...ck from the view to the controller, so it was always 0 (which was not a valid id, but the controller would have no way of knowing that.)
– neminem
Dec 4 '13 at 19:49
1
...