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Browse all latest questions tagged Performance
Often I find myself wanting to get the first object from a queryset in Django, or return None if there aren't any. There are lots of ways to do this which all work. But I'm wondering which is the mo...
How do parseInt() and Number() behave differently when converting strings to numbers?
As an extremely simple benchmark, I executed the below simple code on PHP 7.0.19-1 and Python 3.5.3 (command line) on the same Raspberry Pi 3 model B. Python's execution time was horrible in comparis...
Given a class Foo and a property bar, neither of which I know at compile time, I need to repeatedly call the getter Foo.getBar() many, many times. Suppose I have: Method barGetterMethod = ...; // Do...
The Java tutorials say that creating a Thread is expensive. But why exactly is it expensive? What exactly is happening when a Java Thread is created that makes its creation expensive? I'm taking the s...
I have two lists in Python: temp1 = ['One', 'Two', 'Three', 'Four'] temp2 = ['One', 'Two'] I want to create a third list with items from the first list which aren't in the second list: temp3 = ['Thr...
I've noticed that when playing audio in java, MarkSweepCompact stage in gc is too long and results in short periods of silence, which is unacceptable. So I need to use a low pause gc. I've tried Paral...
The official way, r = praw.Reddit('Comment Scraper 1.0 by u/_Daimon_ see ' 'https://praw.readthedocs.org/en/latest/' 'pages/comment_parsing.html') submission = r.get...
I have defined a python class named Edge as follows: class Edge: def __init__(self): self.node1 = 0 self.node2 = 0 self.weight = 0 Now I have to create approximately 10^...
I have a small Python script which sends POST requests to a server and gets their response. It iterates 10000 times, and I managed to print the current progress in command prompt using: code=current...
I am evaluating react.js and seems like it is quite slow compared to angular.js Here is a problem with 1000 input fields with React: var Message = React.createClass({ render: function () {...
I'm working on a Project Euler problem: the one about the sum of the even Fibonacci numbers. My code: def Fibonacci(n): if n == 0: return 0 elif n == 1: return 1 else:...
Hey Everybody! So i've had JQGrid in my application for a while now and the speed of the grid hasnt really bothered me up until I started optimization. If find that even if I have a small grid (20 i...
I want to write some tests to analyse the efficiency of different operations in python, namely a comparison of dictionary comprehensions and dict generators. To test this out, I thought I would try a...
Project Euler and other coding contests often have a maximum time to run or people boast of how fast their particular solution runs. With Python, sometimes the approaches are somewhat kludgey - i.e.,...