vsymguysung

Bridge Function between Kinesis Streams and Step Functions

For each record read from the Kinesis Stream, a StepFunction state machine will be executed asynchronously.

Required Environment Variables

region: the AWS region where your StepFunction state machine is defined.
stateMachineArn: the ARN of the StepFunction state machine you want to execute.

Notes

TL;DR - Lambda means "function used as data".

Anonymous function means "function without a name".

This is one of the relatively few cases where the Wikipedia definition of a word, while not entirely wrong, is misleading. Lambdas and anonymous functions are distinct ideas.

These ideas are commonly confused because in many programming languages (and lambda calculus) all lambdas are anonymous or vise verse.

In JavaScript, not all lambdas are anonymous, and not all anonymous functions are lambdas, so the distinction has some practical meaning.

TL;DR - Lambda means "function used as data".

Anonymous function means "function without a name".

This is one of the relatively few cases where the Wikipedia definition of a word, while not entirely wrong, is misleading. Lambdas and anonymous functions are distinct ideas.

These ideas are commonly confused because in many programming languages (and lambda calculus) all lambdas are anonymous or vise verse.

In JavaScript, not all lambdas are anonymous, and not all anonymous functions are lambdas, so the distinction has some practical meaning.

Exposing your clipboard over SSH

I frequently administer remote servers over SSH, and need to copy data to my clipboard. If the text I want to copy all fits on one screen, then I simply select it with my mouse and press CMD-C, which asks relies on m y terminal emulator (xterm2) to throw it to the clipboard.

This isn't practical for larger texts, like when I want to copy the whole contents of a file.

If I had been editing large-file.txt locally, I could easily copy its contents by using the pbcopy command:

Steps to install tmux in Cygwin

Install required Cygwin packages

run Cygwin setup.exe
install these packages that are not installed by default: automake, gcc, git and pkg-config

Install libevent

browse http://libevent.org
download libevent-2.0.21-stable.tar.gz

tmux cheatsheet

As configured in my dotfiles.

start new:

tmux

start new with session name:

Converting libraries to Ember CLI addons

In this guide we will cover two main cases:

Ember specific library
vendor library

Ember library

The Ember library will assume that Ember has already ben loaded (higher in the loading order) and thus will assume it has access to the Ember API.

	import Ember from 'ember';

	export default Ember.Controller.extend({
	appName: `Ember's Route Hook Order`,

	actions: {
	clearLog() {
	Ember.$('.log-item').remove();
	}
	}

	import Ember from 'ember';

	export default Ember.Controller.extend({
	appName: 'Ember Twiddle',
	isBooked: Ember.computed(function() {
	var ObjectPromiseProxy = Ember.ObjectProxy.extend(Ember.PromiseProxyMixin);

	return ObjectPromiseProxy.create({
	promise: $.getJSON('https://httpbin.org/get')
	});

	// {{ radio-button name='dish' value='spam' groupValue=selectedDish }} Spam
	// {{ radio-button name='dish' value='eggs' groupValue=selectedDish }} Eggs
	//
	App.RadioButtonComponent = Ember.Component.extend({

	tagName: 'input',
	type: 'radio',
	attributeBindings: [ 'checked', 'name', 'type', 'value' ],

	checked: function () {