z = (set((“a”, “b”, “c”)) – set((x, y))).pop() I am assuming that one of the three cases in your code holds. If this is the case, the set set((“a”, “b”, “c”)) – set((x, y)) will consist of a single element, which is returned by pop(). Edit: As suggested by Raymond Hettinger in the comments, you … Read more
Stopwatch benchmarking is fine, provided you measure enough iterations to be meaningful. Typically, I require a total elapsed time of some number of single digit seconds. Otherwise, your results are easily significantly skewed by scheduling, and other O/S interruptions to your process. For this I use a little set of static methods I built a … Read more
Could anyone explain me what I did wrong here Yes, your timing is dominated by the time to create the list or deque. The time to do the pop is insignificant in comparison. Instead you should isolate the thing you’re trying to test (the pop speed) from the setup time: In [1]: from collections import … Read more
Make it a callable: if __name__==’__main__’: from timeit import Timer t = Timer(lambda: superMegaIntenseFunction(10)) print(t.timeit(number=1)) Should work
The fastest way is to use a HashSet. The Contains for a HashSet is O(1). I took your code and added a benchmark for HashSet<int> The performance cost of HashSet<int> set = new HashSet<int>(list); is nearly zero. Code void Main() { ContainsExistsAnyVeryShort(); ContainsExistsAnyShort(); ContainsExistsAny(); } private static void ContainsExistsAny() { Console.WriteLine(“***************************************”); Console.WriteLine(“********* ContainsExistsAny ***********”); Console.WriteLine(“***************************************”); … Read more
2018 update: Where and how you mount Analytics has changed over and over and over again. The current gtag.js code does a few things: Load the gtag script but async (non-blocking). This means it doesn’t slow your page down in any other way than bandwidth and processing. Create an array on the page called window.datalayer … Read more
It means exactly what it says on the tin can – it’s measuring the performance of something “small”, like a system call to the kernel of an operating system. The danger is that people may use whatever results they obtain from microbenchmarking to dictate optimizations. And as we all know: We should forget about small … Read more
System.Environment.TickCount and the System.Diagnostics.Stopwatch class are two that work well for finer resolution and straightforward usage. See Also: Is DateTime.Now the best way to measure a function’s performance? High resolution timer in .NET Environment.TickCount vs DateTime.Now What’s the best way to benchmark programs in Windows?
Rough answers: Scala’s static typing is helping it quite a bit here – this means that it uses the JVM pretty efficiently without too much extra effort. I’m not exactly sure on the Ruby/Python difference, but I suspect that (2…n).all? in the function is-prime? is likely to be quite well optimised in Ruby (EDIT: sounds … Read more
see the disassembly of python byte code, you may get a more concrete idea use while loop: 1 0 LOAD_CONST 0 (0) 3 STORE_NAME 0 (i) 2 6 SETUP_LOOP 28 (to 37) >> 9 LOAD_NAME 0 (i) # <- 12 LOAD_CONST 1 (100000000) # <- 15 COMPARE_OP 0 (<) # <- 18 JUMP_IF_FALSE 14 (to … Read more