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In Swift how to call method with parameters on GCD main thread?
...ch after on the main queue, use:
DispatchQueue.main.asyncAfter(deadline: .now() + 0.1) {
// your code here
}
Older versions of Swift used:
dispatch_async(dispatch_get_main_queue(), {
let delegateObj = UIApplication.sharedApplication().delegate as YourAppDelegateClass
delegateObj.addUIImage...
Difference between Covariance & Contra-variance
...s T → IE<T>. Notice that this is a "thin arrow".
With me so far?
Now let's consider a relation. There is an assignment compatibility relationship between pairs of types in the first set. A value of type Tiger can be assigned to a variable of type Animal, so these types are said to be "assi...
Sending a message to nil in Objective-C
...ize(); ++i){
System.out.println(list.get(i).toString());
}
}
Now, if you call that method like so: someObject.foo(NULL); you're going to probably get a NullPointerException when it tries to access list, in this case in the call to list.size(); Now, you'd probably never call someObject....
Get list of passed arguments in Windows batch script (.bat)
...will be skipped, and also the remainng files.)
– JinSnow
May 2 '17 at 20:36
1
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How to download source in ZIP format from GitHub?
...
not without using the Github API as far as I know.
– Christoph
Feb 11 '13 at 15:25
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How many and which are the uses of “const” in C++?
...ect remain the same. Once one of the object changes data, you however need now two versions: One for the original, and one for the copy. That is, you copy on a write to either object, so that they now both have their own version.
Using code:
int main() {
string const a = "1234";
string co...
String is immutable. What exactly is the meaning? [duplicate]
...efore coming to any conclusion.
This is how String works:
String str = "knowledge";
This, as usual, creates a string containing "knowledge" and assigns it a reference str. Simple enough? Lets perform some more functions:
String s = str; // assigns a new reference to the same string "knowle...
Cannot push to Git repository on Bitbucket
...trange error. I've used Git before on Bitbucket but I just reformatted and now I can't seem to get Git to work. After doing a commit, I had to add my email and name to the globals, but then it committed just fine.
...
Bootstrap Modal immediately disappearing
...ut the <script> line for the bootstrap-modal.js and then verify that now the modal will function as expected.
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Eclipse error “ADB server didn't ACK, failed to start daemon”
...sk manager, which has adb.exe process and end (kill) that process
Step 2:
Now, close the eclipse, which is currently running on my computer.
Step 3:
Again, restart eclipse then solved that problem.
For those using OS X
killall adb
For those using Windows
adb kill-server
should do the tric...