Andrew Krawchyk akrawchyk

Learn Go in ~5mins

This is inspired by A half-hour to learn Rust and Zig in 30 minutes.

Basics

Your first Go program as a classical "Hello World" is pretty simple:

First we create a workspace for our project:

Here's how to get BitWarden to treat these three different types of Amazon logins as separate

amazon.com consumer retail business login
AWS root user login (AWS logins that use an email address)
AWS IAM user login (AWS logins that use a username)

amazon.com consumer retail

Set URI 1 to Exact with a value of

https://www.amazon.com/ap/signin?_encoding=UTF8&ignoreAuthState=1&openid.assoc_handle=usflex&openid.claimed_id=http%3A%2F%2Fspecs.openid.net%2Fauth%2F2.0%2Fidentifier_select&openid.identity=http%3A%2F%2Fspecs.openid.net%2Fauth%2F2.0%2Fidentifier_select&openid.mode=checkid_setup&openid.ns=http%3A%2F%2Fspecs.openid.net%2Fauth%2F2.0&openid.ns.pape=http%3A%2F%2Fspecs.openid.net%2Fextensions%2Fpape%2F1.0&openid.pape.max_auth_age=0&openid.return_to=https%3A%2F%2Fwww.amazon.com%2F%3Fref_%3Dnav_custrec_signin&switch_account=

puts these in .bashrc, then runx 3 date

function runx() {
  for ((n=0;n<$1;n++))
    do ${*:2}
  done
}

Business Logic / Domain Model structures for Ruby, Rails

adomokos/light-service
- Series of Actions with an emphasis on simplicity.
collectiveidea/interactor
- Interactor provides a common interface for performing complex interactions in a single request.
cypriss/mutations
- Compose your business logic into commands that sanitize and validate input.
orgsync/active_interaction
Manage application specific business logic.

Writing CSS

This project uses cssnext, which allows us to use emerging CSS features at design time and transpile into currently-supported, browser-compatible CSS at runtime.

Styles can be found in app/styles. Inside this folder, you should familiarize yourself with the following structure:

styles
├── config
│ ├── fonts.json

Progressive Web App stack:

Service Worker
Web App Manifest

Old-school offline webapp stack:

Application Cache
Touch Icons (apple-touch-icon etc.)
apple-mobile-web-app-capable or mobile-web-app-capable

RxJS 5 Operators By Example

⚠️ UPDATE: I have moved the contents of this gist plus more to http://www.learnrxjs.io and https://github.com/btroncone/learn-rxjs. For expanded examples, explanations, and resources, please check out this new location!

A complete list of RxJS 5 operators with easy to understand explanations and runnable examples.

System Design Cheatsheet

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

Basic Steps

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?

	# LVDB - LLOOGG Memory DB
	# Copyriht (C) 2009 Salvatore Sanfilippo <[email protected]>
	# All Rights Reserved

	# TODO
	# - cron with cleanup of timedout clients, automatic dump
	# - the dump should use array startsearch to write it line by line
	# and may just use gets to read element by element and load the whole state.
	# - 'help','stopserver','saveandstopserver','save','load','reset','keys' commands.
	# - ttl with milliseconds resolution 'ttl a 1000'. Check ttl in dump!

	SELECT
	now()-pg_postmaster_start_time() "Uptime", now()-stats_reset "Since stats reset",
	round(100.0*checkpoints_req/total_checkpoints,1) "Forced checkpoint ratio (%)",
	round(np.min_since_reset/total_checkpoints,2) "Minutes between checkpoints",
	round(checkpoint_write_time::numeric/(total_checkpoints*1000),2) "Average write time per checkpoint (s)",
	round(checkpoint_sync_time::numeric/(total_checkpoints*1000),2) "Average sync time per checkpoint (s)",
	round(total_buffers/np.mp,1) "Total MB written",
	round(buffers_checkpoint/(np.mp*total_checkpoints),2) "MB per checkpoint",
	round(buffers_checkpoint/(np.mpnp.min_since_reset60),2) "Checkpoint MBps",
	round(buffers_clean/(np.mpnp.min_since_reset60),2) "Bgwriter MBps",