nadavrot

High-Performance Matrix Multiplication

This is a short post that explains how to write a high-performance matrix multiplication program on modern processors. In this tutorial I will use a single core of the Skylake-client CPU with AVX2, but the principles in this post also apply to other processors with different instruction sets (such as AVX512).

Intro

Matrix multiplication is a mathematical operation that defines the product of

yossorion

What I Wish I'd Known About Equity Before Joining A Unicorn

Disclaimer: This piece is written anonymously. The names of a few particular companies are mentioned, but as common examples only.

This is a short write-up on things that I wish I'd known and considered before joining a private company (aka startup, aka unicorn in some cases). I'm not trying to make the case that you should never join a private company, but the power imbalance between founder and employee is extreme, and that potential candidates would

staltz

The introduction to Reactive Programming you've been missing

(by @andrestaltz)

---

This tutorial as a series of videos

If you prefer to watch video tutorials with live-coding, then check out this series I recorded with the same contents as in this article: Egghead.io - Introduction to Reactive Programming.

---

heygarrett

" Set colorscheme to solarized
colorscheme solarized

" Change the Solarized background to dark or light depending upon the time of 
" day (5 refers to 5AM and 17 to 5PM). Change the background only if it is not 
" already set to the value we want.
function! SetSolarizedBackground()
    if strftime("%H") >= 5 && strftime("%H") < 17 
        if &background != 'light'
            set background=light

mislav

I use tmux splits (panes). Inside one of these panes there's a Vim process, and it has its own splits (windows).

In Vim I have key bindings C-h/j/k/l set to switch windows in the given direction. (Vim default mappings for windows switching are the same, but prefixed with C-W.) I'd like to use the same keystrokes for switching tmux panes.

An extra goal that I've solved with a dirty hack is to toggle between last active panes with C-\.

Here's how it should work:

cobrajs

#!/bin/bash

session_name=
session_pre=
if [[ "$1" ]]; then
  session_name="-t $1"
  session_pre="$1"
fi

session_path=$(tmux list-panes -t $session_pre:1 -F "#{pane_start_path}")

Kapeli

" Search Dash for word under cursor
function! SearchDash()
  let s:browser = "/usr/bin/open"
  let s:wordUnderCursor = expand("<cword>")
  let s:url = "dash://".s:wordUnderCursor
  let s:cmd ="silent ! " . s:browser . " " . s:url
  execute s:cmd
  redraw!
endfunction
map <leader>d :call SearchDash()<CR>

pyro2927

# Solarized Theme
# Attempting to copy: http://ethanschoonover.com/solarized
# Example: http://i.imgur.com/T9BTRG4.png

if patched_font_in_use; then
  TMUX_POWERLINE_SEPARATOR_LEFT_BOLD="⮂"
	TMUX_POWERLINE_SEPARATOR_LEFT_THIN="⮃"
	TMUX_POWERLINE_SEPARATOR_RIGHT_BOLD="⮀"
	TMUX_POWERLINE_SEPARATOR_RIGHT_THIN="⮁"
else

minitech

for(var i=0;i<1e3;i++)Object.defineProperty(Number.prototype,'_'+i,{get:function(i){return function(){for(var r=[],j=~~this;j<=i;j++)r.push(j);return r;};}(i)});

1.._20.forEach(function(i) {
	console.log(i);
});

dergachev

OS X Screencast to animated GIF

This gist shows how to create a GIF screencast using only free OS X tools: QuickTime, ffmpeg, and gifsicle.

Instructions

To capture the video (filesize: 19MB), using the free "QuickTime Player" application: