parinck

Mac web developer apps

This gist's comment stream is a collection of webdev apps for OS X. Feel free to add links to apps you like, just make sure you add some context to what it does — either from the creator's website or your own thoughts.

— Erik

parinck

#!/bin/bash

# ---------------------------------------------------------
# Customizable Settings
# ---------------------------------------------------------

MOUNT_POINT="${CASE_SAFE_MOUNT_POINT:-${HOME}/workspace}"
VOLUME_PATH="${CASE_SAFE_VOLUME_PATH:-${HOME}/.workspace.dmg.sparseimage}"
VOLUME_NAME="${CASE_SAFE_VOLUME_NAME:-workspace}"
VOLUME_SIZE="${CASE_SAFE_VOLUME_SIZE:-60g}"

parinck

#!/bin/sh

###
# SOME COMMANDS WILL NOT WORK ON macOS (Sierra or newer)
# For Sierra or newer, see https://github.com/mathiasbynens/dotfiles/blob/master/.macos
###

# Alot of these configs have been taken from the various places
# on the web, most from here
# https://github.com/mathiasbynens/dotfiles/blob/5b3c8418ed42d93af2e647dc9d122f25cc034871/.osx

parinck

[
  {"id": "side-bar-files-open-with",
		"children":
		[
			// Chrome
			{
				"caption": "Chrome",
				"id": "side-bar-files-open-with-chrome",

				"command": "side_bar_files_open_with",

parinck

To keep the changes from the commit you want to undo

$ git reset --soft HEAD^

To destroy the changes from the commit you want to undo

$ git reset --hard HEAD^

You can also say

parinck

tell application "Google Chrome"
	
	set tab_list to every tab in the front window
	
	repeat with the_tab in tab_list
		set the_url to the URL of the_tab
		tell application "Safari" to open location the_url
	end repeat
	
end tell

parinck

-- Table information like sortkeys, unsorted percentage
-- see http://docs.aws.amazon.com/redshift/latest/dg/r_SVV_TABLE_INFO.html
SELECT * FROM svv_table_info;

-- Table sizes in GB
SELECT t.name, COUNT(tbl) / 1000.0 AS gb
FROM (
  SELECT DISTINCT datname, id, name
  FROM stv_tbl_perm
  JOIN pg_database ON pg_database.oid = db_id

parinck

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

parinck

Stevey's Google Platforms Rant

I was at Amazon for about six and a half years, and now I've been at Google for that long. One thing that struck me immediately about the two companies -- an impression that has been reinforced almost daily -- is that Amazon does everything wrong, and Google does everything right. Sure, it's a sweeping generalization, but a surprisingly accurate one. It's pretty crazy. There are probably a hundred or even two hundred different ways you can compare the two companies, and Google is superior in all but three of them, if I recall correctly. I actually did a spreadsheet at one point but Legal wouldn't let me show it to anyone, even though recruiting loved it.

I mean, just to give you a very brief taste: Amazon's recruiting process is fundamentally flawed by having teams hire for themselves, so their hiring bar is incredibly inconsistent across teams, despite various efforts they've made to level it out. And their operations are a mess; they don't real

parinck

System Design Cheatsheet

Picking the right architecture = Picking the right battles + Managing trade-offs

Basic Steps

1. Clarify and agree on the scope of the system

• User cases (description of sequences of events that, taken together, lead to a system doing something useful)
  • Who is going to use it?
  • How are they going to use it?