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What is the most ridiculous pessimization you've seen? [closed]
...bing 16 bits from RAM was quicker than grabbing 32 bits.
I had to write a demo program to show that grabbing 32-bit values on a 32-bit system was faster than grabbing 16-bit values, and explain that to grab a 16-bit value the CPU had to make a 32-bit wide memory access and then mask out or shift th...
Navigation in django
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I use template inheritance to customize navigation. For example:
base.html
<html>
<head>...</head>
<body>
...
{% block nav %}
<ul id="nav">
<li>{% block nav-home %}<a href="{% url home %}">Home</a>...
(![]+[])[+[]]… Explain why this works
... for help, clarification, or responding to other answers.Making statements based on opinion; back them up with references or personal experience.To learn more, see our tips on writing great answers.
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What does the slash mean in help() output?
...hat accepts positional-only parameters, arguments are mapped to parameters based solely on their position.
The syntax is now part of the Python language specification, as of version 3.8, see PEP 570 – Python Positional-Only Parameters. Before PEP 570, the syntax was already reserved for possible...
Calculate distance between 2 GPS coordinates
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Java Version of Haversine Algorithm based on Roman Makarov`s reply to this thread
public class HaversineAlgorithm {
static final double _eQuatorialEarthRadius = 6378.1370D;
static final double _d2r = (Math.PI / 180D);
public static int HaversineI...
What is the purpose of the -m switch?
...ause its package will be loaded along the way. 3) Absolute imports will be based on your current directory, not the directory where the .py file is ('' is at the head of sys.path, rather than /path/to/my, if the script is at /path/to/my/script.py).
– clacke
Sep...
Django - filtering on foreign key properties
I'm trying to filter a table in Django based on the value of a particular field of a ForeignKey .
3 Answers
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Declaring abstract method in TypeScript
...ed to implement an abstract method as makeSound(input : number) : string { based on the above example where input should be a string. Type 'string' is not assignable to type 'number'..
– Fenton
Dec 6 '17 at 11:50
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Do a “git export” (like “svn export”)?
... You're right. I'd forgotten that I was using git config url.<base>.insteadOf to cache the remote repository. I was therefore using a file:// URL in reality. I doubt that git archive could ever work with git:// URLs since it needs to be able to run git-upload-archive at the remote en...
Why can't I use a list as a dict key in python?
...ould just do that instead of relying on __hash__ and __eq__ to be identity-based.
– user395760
Aug 31 '11 at 13:45
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