Carlo cdcme

This notes is written by Sheldon. You can find me with #iOSBySheldon in Github, Youtube, Facebook, etc.

Need

Convert .mov/.MP4 to .gif

Reason

As a developer, I feel better to upload a short video when I create the pull request to show other viewers what I did in this PR. I tried .mov format directly got after finishing recording screen using Quicktime, however, gif offers preview in most web pages, and has smaller file size.

This is not limited to developer, anyone has this need can use this method to convert the files.

Golang installation guide

Since Golang version 1.11 this process is finally (almost) as easy as it should (!!). You can see full docs here. For older guides see here.

These are my notes, not a generic solution. They are not meant to work anywhere outside my machines. Update version numbers to whatever are the current ones while you do this.

Installing everything needed the first time

Install `asdf` and its golang plugin, then install golang

Elixir + Phoenix Framework + Guardian + JWT + Comeonin

Preparing environment

We need to generate secret key for development environment.

mix phoenix.gen.secret
# ednkXywWll1d2svDEpbA39R5kfkc9l96j0+u7A8MgKM+pbwbeDsuYB8MP2WUW1hf

Let's generate User model and controller.

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

Standardized Ladder of Functional Programming

The LambdaConf Ladder of Functional Programming (LOFP) is a standardized progression of different concepts and skills that developers must master on their journey to becoming expert-level functional programmers. LOFP can be used to rank workshops, talks, presentations, books, and courseware, so that aspiring functional programmers have a better understanding of what material is appropriate for them given their current experience.

Fire Keramik

Concepts

Immutable Data
Second-order Functions

	# Generate a new pgp key: (better to use gpg2 instead of gpg in all below commands)
	gpg --gen-key
	# maybe you need some random work in your OS to generate a key. so run this command: `find ./* /home/username -type d \| xargs grep some_random_string > /dev/null`

	# check current keys:
	gpg --list-secret-keys --keyid-format LONG

	# See your gpg public key:
	gpg --armor --export YOUR_KEY_ID
	# YOUR_KEY_ID is the hash in front of `sec` in previous command. (for example sec 4096R/234FAA343232333 => key id is: 234FAA343232333)

	FROM elixir:1.4.5 as asset-builder-mix-getter

	ENV HOME=/opt/app

	RUN mix do local.hex --force, local.rebar --force
	# Cache elixir deps
	COPY config/ $HOME/config/
	COPY mix.exs mix.lock $HOME/
	COPY apps/myproject_web/mix.exs $HOME/apps/myproject_web/
	COPY apps/myproject_web/config/ $HOME/apps/myproject_web/config/

	const compose = (...fns) => fns.reduce((f, g) => (...args) => f(g(...args)))

	// Usage : compose functions right to left
	// compose(minus8, add10, multiply10)(4) === 42
	//
	// The resulting function can accept as many arguments as the first function does
	// compose(add2, multiply)(4, 10) === 42

	// Non Recursive
	func memoize<T: Hashable, U>(work: @escaping (T)->U) -> (T)->U {
	var memo = Dictionary<T, U>()

	return { x in
	if let q = memo[x] { return q }
	let r = work(x)
	memo[x] = r
	return r
	}

	// ----- src/client/views/Shell.jsx -----

	// Dynamic components & pages are handled differently. `react-router` doesn't use the `children` object for rendered content.
	// Instead it uses the keys specified in each route defined by dynamic-pages in `routes.jsx`, such as `header` and `content`.

	import React, { Component, PropTypes } from 'react';

	import s from './Shell/_style.scss';

	export default class Shell extends Component {