(by @andrestaltz)
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.
(by @andrestaltz)
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.
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
// Source: https://groups.google.com/forum/#!topic/angular/hVrkvaHGOfc | |
// jsFiddle: http://jsfiddle.net/pkozlowski_opensource/PxdSP/14/ | |
// author: Pawel Kozlowski | |
var myApp = angular.module('myApp', []); | |
//service style, probably the simplest one | |
myApp.service('helloWorldFromService', function() { | |
this.sayHello = function() { | |
return "Hello, World!" |
When the directory structure of your Node.js application (not library!) has some depth, you end up with a lot of annoying relative paths in your require calls like:
const Article = require('../../../../app/models/article');
Those suck for maintenance and they're ugly.
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
# | |
# Wide-open CORS config for nginx | |
# | |
location / { | |
if ($request_method = 'OPTIONS') { | |
add_header 'Access-Control-Allow-Origin' '*'; | |
# |
Kris Nuttycombe asks:
I genuinely wish I understood the appeal of unityped languages better. Can someone who really knows both well-typed and unityped explain?
I think the terms well-typed and unityped are a bit of question-begging here (you might as well say good-typed versus bad-typed), so instead I will say statically-typed and dynamically-typed.
I'm going to approach this article using Scala to stand-in for static typing and Python for dynamic typing. I feel like I am credibly proficient both languages: I don't currently write a lot of Python, but I still have affection for the language, and have probably written hundreds of thousands of lines of Python code over the years.
#set up the dir structure if it doesn't exist | |
set t ~/.trello; mkdir -p $t | |
function if_exist # we don't want to litter our code with ifs if a read model or events are not there yet. Return /dev/nul for empty | |
if test -e $t/$argv[1]; echo $t/$argv[1]; else; echo /dev/null; end | |
end | |
function list # provide lists from our tab delimited entries with filtering and line item numbers to make choices | |
set list $argv[1]; set column_to_show $argv[2]; set filter $argv[3]; set count 1 | |
cat (if_exist $list) | grep -e "$filter\$" | while read line | |
set -l line_items (string split \t $line) | |
echo $count\) $line_items[$column_to_show] |