kovetskiy

#!/bin/bash
###
### my-script — does one thing well
###
### Usage:
###   my-script <input> <output>
###
### Options:
###   <input>   Input file to read.
###   <output>  Output file to write. Use '-' for stdout.

jFransham

Achieving warp speed with Rust

Contents:

• Number one optimization tip: don't
• Never optimize blindly
• Don't bother optimizing one-time costs
• Improve your algorithms
• CPU architecture primer
• Keep as much as possible in cache
• Keep as much as possible in registers

nornagon

How to make a Minecraft mod

Minecraft mods, especially mods which change the client, are by and large written with Forge. If you visit their website, you'll be greeted abruptly by a mysterious message at the top of an SMF forum, with no clear path towards actually... making a mod. I'm documenting here the steps I went through to get started, in the hopes of helping the next person have an easier time of it.

I'll be using Scala for this guide, but it should be fairly easy to adapt these instructions to any JVM language (e.g. clojure or if you're feeling masochistic, Java). I'm also developing on OS X, so some of the commands will be a little different if you're on Linux or Windows. I'm assuming you have some proficiency with your operating system, so I won't go into details about how to adapt those commands to your system.

Background

Minecraft doesn't have an official mod API (despite early [promises](http://notch.t

d1manson

As of writing, this is only possible with my fork of pandas, but hopefully it will make its way into the main pandas stable branch.

The purpose of the fork is to let you specify a custom html formatter for individual columns in a data frame.

---

In this example we create a formatting function which takes a numpy array and returns a string of the form <img src='--base64-encoded-data'/>. This means that the numpy array is displayed as an image.

Below is the code we use to define our custom format function. Note that the function takes a single element from the data frame and returns and html string::

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