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How do I call Objective-C code from Swift?
...ift classes (Not descendents of NSObject) which are visible to Objective-C by using the @objc prefix, this is no longer possible. Now, to be visible in Objective-C, the Swift object must either be a class conforming to NSObjectProtocol (easiest way to do this is to inherit from NSObject), or to be a...
What underlies this JavaScript idiom: var self = this?
...re. It's often that = this;.
See how self is used inside functions called by events? Those would have their own context, so self is used to hold the this that came into Note().
The reason self is still available to the functions, even though they can only execute after the Note() function has fini...
Getting time elapsed in Objective-C
...patch block, I was getting the same "current" time that was being reported by [NSDate date] immediately before execution hit the point at which my blocks were created. CACurrentMediaTime() solved this issue.
– n00neimp0rtant
Jan 23 '14 at 21:05
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How to split strings across multiple lines in CMake?
...tter. From the documentation:
An opening bracket is written [ followed by zero or more = followed by [. The corresponding closing bracket is written ] followed by the same number of = followed by ]. Brackets do not nest. A unique length may always be chosen for the opening and closing brackets t...
Why do I get an UnsupportedOperationException when trying to remove an element from a List?
...ze list
From the API:
Arrays.asList: Returns a fixed-size list backed by the specified array.
You can't add to it; you can't remove from it. You can't structurally modify the List.
Fix
Create a LinkedList, which supports faster remove.
List<String> list = new LinkedList<String>...
Releasing memory in Python
...ocated on the heap can be subject to high-water marks. This is complicated by Python's internal optimizations for allocating small objects (PyObject_Malloc) in 4 KiB pools, classed for allocation sizes at multiples of 8 bytes -- up to 256 bytes (512 bytes in 3.3). The pools themselves are in 256 KiB...
The “unexpected ++” error in jslint [duplicate]
...new value of j, resulting in 1 being alerted.
This could easily be solved by doing
var i = 0, j = 0;
alert((i++) +j);
Now this cannot be mistaken.
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Why does substring slicing with index out of range work?
...s of the sequence. In your example, s[-100:2] == s[0:2] (== s[-len(s):2], by the way). Similarly, s[-100:100] == s[0:2].
– tylerc0816
Aug 18 '17 at 13:26
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Why can templates only be implemented in the header file?
...blic for structs. There are some other tiny differences that you can learn by looking at this question.
– Luc Touraille
Feb 21 '14 at 14:12
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Creating temporary files in Android
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Every app uses it's own cache: By default, files saved to the internal storage are private to your application and other applications cannot access them (nor can the user). If you'd like to cache some data, you should use getCacheDir() to open a File wher...