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

cbarrick

Test cases for the blog post [Encoding tic-tac-toe in 15 bits][post].

Run like this:

# Base4 test
$ cc base4.c && ./a.out

# Base3 test
$ cc base3.c && ./a.out

jimbojsb

Step 0:

Get Homebrew installed on your mac if you don't already have it

Step 1:

Install highlight. "brew install highlight". (This brings down Lua and Boost as well)

Step 2:

diogomonica

require 'rubygems'
require 'mechanize'

FIRST_NAME = 'FIRST_NAME'
LAST_NAME = 'LAST_NAME'
PHONE = 'PHONE'
EMAIL = 'EMAIL@provider.com'

PARTY_SIZE = 2
SCHEDULE_RANGE = { :start_time => '19:00', :end_time => '20:30' }

dergachev

# taken from http://www.piware.de/2011/01/creating-an-https-server-in-python/
# generate server.xml with the following command:
#    openssl req -new -x509 -keyout server.pem -out server.pem -days 365 -nodes
# run as follows:
#    python simple-https-server.py
# then in your browser, visit:
#    https://localhost:4443

import BaseHTTPServer, SimpleHTTPServer
import ssl

hrldcpr

One-line Tree in Python

Using Python's built-in defaultdict we can easily define a tree data structure:

def tree(): return defaultdict(tree)

That's it!

postrational

#!/bin/bash

NAME="hello_app"                                  # Name of the application
DJANGODIR=/webapps/hello_django/hello             # Django project directory
SOCKFILE=/webapps/hello_django/run/gunicorn.sock  # we will communicte using this unix socket
USER=hello                                        # the user to run as
GROUP=webapps                                     # the group to run as
NUM_WORKERS=3                                     # how many worker processes should Gunicorn spawn
DJANGO_SETTINGS_MODULE=hello.settings             # which settings file should Django use
DJANGO_WSGI_MODULE=hello.wsgi                     # WSGI module name

smiled0g

#!/usr/bin/env bash

# Install Git Large File Storage (LFS)
brew install git-lfs
git lfs install

# Download & Install Llama
git clone https://github.com/ggerganov/llama.cpp
cd llama.cpp
LLAMA_METAL=1 make -j # build with Metal support for (M-series) Apple Silicon

jexp

LOAD CSV into Neo4j quickly and successfully

Since version 2.1 Neo4j provides out-of-the box support for CSV ingestion. The LOAD CSV command that was added to the Cypher Query language is a versatile and powerful ETL tool. It allows you to ingest CSV data from any URL into a friendly parameter stream for your simple or complex graph update operation, that …​ conversion.

chriskiehl

import time
import win32api, win32con

VK_CODE = {'left_arrow':0x25,
		   'spacebar':0x20,
           'right_arrow':0x27}

def press(x):
    win32api.keybd_event(VK_CODE[x], 0,0,0)
    win32api.keybd_event(VK_CODE[x],0 ,win32con.KEYEVENTF_KEYUP ,0)