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How can i tell if an object has a key value observer attached
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Put a try catch around your removeObserver call
@try{
[someObject removeObserver:someObserver forKeyPath:somePath];
}@catch(id anException){
//do nothing, obviously it wasn't attached because an exception was thrown
}
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How to create a checkbox with a clickable label?
How can I create an HTML checkbox with a label that is clickable (this means that clicking on the label turns the checkbox on/off)?
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Android LinearLayout : Add border with shadow around a LinearLayout
I would like to create the same border of this LinearLayout as the example :
13 Answers
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Xcode 6 Storyboard the wrong size?
...lt a new project from scratch in Swift in Xcode 6 (Beta 1) and have seen some strange behaviour with Storyboards and the output that I am viewing.
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When do you use the Bridge Pattern? How is it different from Adapter pattern?
...ge Pattern in a real world application? If so, how did you use it? Is it me, or is it just the Adaptor Pattern with a little dependency injection thrown into the mix? Does it really deserve its own pattern?
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What is lazy loading in Hibernate?
... is lazy loading in Java? I don't understand the process. Can anybody help me to understand the process of lazy loading?
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What is a WeakHashMap and when to use it? [duplicate]
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Elements in a weak hashmap can be reclaimed by the garbage collector if there are no other strong references to the key object, this makes them useful for caches/lookup storage.
Weak reference are not restricted to these hash t...
Make anchor link go some pixels above where it's linked to
...you are on the page while the hash is changed. Entering the page with a #something already in the URL does not work with the above code. Here is another version to handle that:
// The function actually applying the offset
function offsetAnchor() {
if(location.hash.length !== 0) {
window...
Docker how to change repository name or rename image?
I'm trying to change repository name of the image:
7 Answers
7
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Font from origin has been blocked from loading by Cross-Origin Resource Sharing policy
I'm receiving the following error on a couple of Chrome browsers but not all. Not sure entirely what the issue is at this point.
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