kalafut

#!/bin/bash
#
# Simple creation of a single-app django project, as described in: https://zindilis.com/posts/django-anatomy-for-single-app/
#
# ./django_init foo
#
# This will result is the following flat structure:
#
# .
# └── foo

robcowie

from sqlalchemy.inspection import inspect

def changed_columns(obj):
    info = inspect(obj)
    return dict((name, attr.history) for name, attr
        in info.attrs.items() if attr.history.has_changes())

ravenac95

import inspect
from flask import Flask


def expose(f):
    """Decorator that flags a method to be exposed"""
    f._exposed_method = True
    return f

hellerbarde

Latency numbers every programmer should know

L1 cache reference ......................... 0.5 ns
Branch mispredict ............................ 5 ns
L2 cache reference ........................... 7 ns
Mutex lock/unlock ........................... 25 ns
Main memory reference ...................... 100 ns             
Compress 1K bytes with Zippy ............. 3,000 ns  =   3 µs
Send 2K bytes over 1 Gbps network ....... 20,000 ns  =  20 µs
SSD random read ........................ 150,000 ns  = 150 µs

Read 1 MB sequentially from memory ..... 250,000 ns = 250 µs

jboner

Latency Comparison Numbers (~2012)
----------------------------------
L1 cache reference                           0.5 ns
Branch mispredict                            5   ns
L2 cache reference                           7   ns                      14x L1 cache
Mutex lock/unlock                           25   ns
Main memory reference                      100   ns                      20x L2 cache, 200x L1 cache
Compress 1K bytes with Zippy             3,000   ns        3 us
Send 1K bytes over 1 Gbps network       10,000   ns       10 us
Read 4K randomly from SSD*             150,000   ns      150 us          ~1GB/sec SSD

cliffxuan

import sys
import threading
import Queue

import wx

_noTimeoutDefault = object()
def defer(
    returnToFunction,
    function,

chriseppstein

Sass/Less Comparison

In this document I am using Sass's SCSS syntax. You can choose to use the indented syntax in sass, if you prefer it, it has no functional differences from the SCSS syntax.

For Less, I'm using the JavaScript version because this is what they suggest on the website. The ruby version may be different.

Variables

sanxiyn

#include <assert.h>
#include <stdarg.h>
#include <stdbool.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>

enum type {
    NIL,

isaacs

// See comments below.

// This code sample and justification brought to you by
// Isaac Z. Schlueter, aka isaacs

// standard style
var a = "ape",
  b = "bat",
  c = "cat",
  d = "dog",