On systems with gnu linker and compiler or something compatible, it’s possible to put certain objects in different sections. The linker will then generate symbols for the start and end of the section. Using that you can put all your structs into that section in different objects, the linker will consolidate those sections when linking … Read more
Let’s take a look at this python function: def py_fun(i,N,step): res=0.0 while i<N: res+=i i+=step return res and use ipython-magic to time it: In [11]: %timeit py_fun(0.0,1.0e5,1.0) 10 loops, best of 3: 25.4 ms per loop The interpreter will be running through the resulting bytecode and interpret it. However, we could cut out the interpreter … Read more
You must be as fast as possible in your onClick implementation. Expensive operations should be, in general, offloaded to a background thread. In onClick, try: Thread t = new Thread(){ public void run(){ your_stuff(); } }; t.start(); instead of just your_stuff()
Functions are first class objects in Python and so you can dispatch using a dictionary. For example, if foo and bar are functions, and dispatcher is a dictionary like so. dispatcher = {‘foo’: foo, ‘bar’: bar} Note that the values are foo and bar which are the function objects, and NOT foo() and bar(). To … Read more
tl;dr: Use the class constant approach if you are using Swift 1.2 or above and the nested struct approach if you need to support earlier versions. From my experience with Swift there are three approaches to implement the Singleton pattern that support lazy initialization and thread safety. Class constant class Singleton { static let sharedInstance … Read more