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RxJS 5 Operators By Example

⚠️ UPDATE: I have moved the contents of this gist plus more to https://github.com/btroncone/learn-rxjs and http://www.learnrxjs.io. 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.

Chinese Version by: @DrakeLeung

Table of Contents

• buffer

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# Capslock? pshaw.
setxkbmap -option ctrl:nocaps

# Lets get to it
sudo apt-get update

# install a bunch of build and dev libraries
sudo apt-get install build-essential libpq-dev libssl-dev libyaml-dev libreadline6-dev \
zlib1g-dev libncurses5-dev libffi-dev libgdbm3 libgdbm-dev

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module ActiveRecord::UnionScope
  def self.included(base)
    base.send :extend, ClassMethods
  end
  
  module ClassMethods
    def union_scope(*scopes)
      id_column = "#{table_name}.#{primary_key}"
      sub_query = scopes.map { |s| s.select(id_column).to_sql }.join(" UNION ")
      where "#{id_column} IN (#{sub_query})"

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Elm Types Glossary

There's a lot of type terminology and jargon going around when discussing types in Elm. This glossary attempts to list some of the most common type terms along with synonyms, terms from other language communities, examples, and links to more detailed articles on each topic.

Custom Type

These are the basic building blocks of data modeling in Elm. This used to be

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map2 : (a -> b -> c) -> Validatable a -> Validatable b -> Validatable c
map2 func v1 v2 =
    case ( v1, v2 ) of
        ( Invalid a fatal warnings, Valid b ) ->
            Invalid (func a b) fatal warnings

        ( Invalid a fa wa, Warnings b wb ) ->
            Invalid (func a b) fa (wa ++ Nonempty.toList wb)

        ( Invalid a fa wa, Invalid b fb wb ) ->

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Elm Resources

Articles

Decoders

• https://8thlight.com/blog/kofi-gumbs/2017/06/28/elm-json-decoding-types.html
• https://8thlight.com/blog/kofi-gumbs/2017/07/17/elm-json-decoding-data-structures.html
• https://8thlight.com/blog/kofi-gumbs/2017/08/29/elm-json-decoding-custom.html

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Elm Resources

• The Elm Architecture (gif)

Articles

General

• What the heck is polymorphism?

Decoders

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=== zshrc
# Lines configured by zsh-newuser-install
HISTFILE=~/.histfile
HISTSIZE=10000
SAVEHIST=10000
setopt appendhistory autocd extendedglob
unsetopt beep
bindkey -e
# End of lines configured by zsh-newuser-install
# The following lines were added by compinstall

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Forms, Validations, and Static Types

Pitch your talk to the audience

Elm is a statically typed language that allows us to make impossible states impossible. But for those newer to Elm it isn't always obvious how to use this super power to solve their practical problems.

If you are still feeling a bit unsure yourself then join us as we use types to

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Modern Ruby and Rail Resources

Hotwire

• Turbo Frames on Rails by @DavidColby - provides a good overview of using frames and what they offer.