Musings JS

• ReactCasts Episode 1: Higher Order Components. Higher order components in React Casts
• Cheat sheet for Axios.
• Absolute import path for create-react-app
• Folder structure solution: react-boilerplate

// package.json

"scripts": {
  "start": "NODE_PATH=src/ react-scripts start",
  "build": "NODE_PATH=src/ react-scripts build",
  "test": "NODE_PATH=src/ react-scripts test — env=jsdom",
  "eject": "NODE_PATH=src/ react-scripts eject"
}

Musings, Ruby

• RubyTapas 38: Caller-Specified Fallback Handler. Punt an error like this:

def get_temp(query, &fallback)
  begin
    fallback ||= DEFAULT_FALLBACK # There is a default proc that executes if something goes wrong, but the client has the option to create their own error handler
    # Do things that can lead to an error ...
  rescue => error
    fallback.call(error)
  end
end

• RubyTapas 160: Reduce Redux.
  • Reduce to do a deep_fetch?
  • Checksum using Binary XOR.
• RubyTapas 159: Using Set.
  • Union operator (avdi_list | stacey_list).
  • Intersection (avdi & stacey).
  • Difference/complement between 2 lists: (avdi - stacey).
  • Pipe equals operator: Preserves uniqueness. avdi_list |= ['granola'] to add to the union.
• RubyTapas 158: Constant Lookup Scope.
  • Planets::Jupiter is different from module Planets; module Jupiter; end; end. The lookup chain is based on the lexical scope of the code, not the current module.
  • No reason to use the shorthand form of module declaration. Declare them explicitly.