Roman Minkin RomanMinkin

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:

A few show tricks to find slow queries in mongodb

Enable profiling

First, you have to enable profiling

> db.setProfilingLevel(1)

Now let it run for a while. It collects the slow queries ( > 100ms) into a capped collections, so queries go in and if it's full, old queries go out, so don't be surprised that it's a moving target...

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

Firefox bullshit removal

Due to the incessant swarm of complete and utter nonsense that has been forcing its way into Firefox over time, I've decided to start collecting my personal list of “must-have” about:config tweaks required to turn Firefox into a functional brower.

NOTE: Unfortunately this is somewhat out of date. The comments link to some resources that may be more up-to-date. Patches welcome.

WebSockets

These can be used for nefarious purposes and to bypass access restrictions.

	# Hello, and welcome to makefile basics.
	#
	# You will learn why `make` is so great, and why, despite its "weird" syntax,
	# it is actually a highly expressive, efficient, and powerful way to build
	# programs.
	#
	# Once you're done here, go to
	# http://www.gnu.org/software/make/manual/make.html
	# to learn SOOOO much more.

	#!/usr/bin/env node

	'use strict';

	// Program accepts only json array string on stdin
	// You need node.js with version >= v6.2.2
	// Examples of usage:
	//
	// $ echo "[1,2,[3,4],[5,[6],7],8]" \| node flatten.js
	// [1,2,3,4,5,6,7,8]

	#!/usr/bin/env node

	// Save hook under `project-root/hooks/before_prepare/`
	//
	// Don't forget to install xml2js using npm
	// `$ npm install xml2js`

	var fs = require('fs');
	var xml2js = require('xml2js');

	package main

	import (
	"context"
	"flag"
	"fmt"
	"log"
	"net/http"
	"os"
	"os/signal"

	package main

	import (
	"crypto/tls"
	"golang.org/x/crypto/acme/autocert"
	"log"
	"net"
	"net/http"
	)

	echo 'Formatting the code base...'
	godep go fmt $(go list ./... \| grep -v /vendor/)

	echo 'Optimizing the imports...'
	goimports -w $(go list -f {{.Dir}} ./... \| grep -v /vendor/)

	echo 'Installing dependencies. This might take some time...'
	godep go install $(go list ./... \| grep -v /vendor/)

	echo "Executing test"