seoyoochan

HTTP status code symbols for Rails

Thanks to Cody Fauser for this list of HTTP responce codes and their Ruby on Rails symbol mappings.

Status Code Symbol
1xx Informational
100 :continue
101 :switching_protocols
102 :processing

seoyoochan

apm install advanced-open-file atom-beautify atom-pair autoclose-html autocomplete-html-entities autocomplete-ruby autoprefixer dash emmet environment linter linter-eslint linter-jscs merge-conflicts react redux-snippets go-plus file-icons

seoyoochan

// http://vim.wikia.com/wiki/Moving_around

e 
Move to the end of a word.
w 
Move forward to the beginning of a word.
3w 
Move forward three words.
W 
Move forward a WORD (any non-whitespace characters).

seoyoochan

The w in the w + 1 default value expression looks for w in the formal parameters' scope, 
but does not find it, so the outer scope's w is used. 
Next, The x in the x + 1 default value expression finds x in the formal parameters' scope, 
and luckily x has already been initialized, so the assignment to y works fine.

However, the z in z + 1 finds z as a not-yet-initialized-at-that-moment parameter variable, 
so it never tries to find the z from the outer scope.

As we mentioned in the "let Declarations" section earlier in this chapter, 
ES6 has a TDZ, which prevents a variable from being accessed in its uninitialized state. 

seoyoochan

git branch -m old_branch new_branch         # Rename branch locally    
git push origin :old_branch                 # Delete the old branch    
git push --set-upstream origin new_branch   # Push the new branch, set local branch to track the new remote

seoyoochan

Tether is a great library for positioning stuff (tooltips, modals, hints, etc) in your web app.

But, as I use React, it was pretty problematic for me, as Tether mutates the DOM and React breaks miserably when it sees mutated DOM. The solution is to have the tethered element outside the part of the DOM tree which is controlled by React (in this case, I use document.body).

That's why I created 2 helpers to use Tether with React.

The first one, TetheredElement is a plain JS helper to create a new element, attach it to some other one via Tether, and populate it with some React component.

The second one, TetherTarget is a React component and it uses TetheredElement to integrate it further with React, so that you can attach components to each other with Tether, without leaving the cozy React/JSX world and worrying about manual DOM operations. Just write:

seoyoochan

var ConstDependency = require('webpack/lib/dependencies/ConstDependency');
var NullFactory = require('webpack/lib/NullFactory');
var _ = require('lodash');

function I18nRuntimePlugin(options) {
  options = options || {};
  this.functionNames = options.functionNames || ['I18n.t', 'I18n.translate'];
  this.translationsPlaceholder = options.translationsPlaceholder || 'I18N_RUNTIME_TRANSLATIONS';
  this.fullTranslations = options.fullTranslations || {};
}

seoyoochan

When using react-rails for an internationalized app it makes a lot of sense to use i18n-js for translations, so that you can reuse the the strings from your rails app's .yml files (and all the tooling & services that exist around that).

When you use the prerender feature of react-rails you face 2 problems:

• The first is that translation.js & i18n.js from i18n-js need to be loaded inside the server-side JS prerendering processes, which is achieved by loading them inside the components.js.
• The second problem is the server processes need to be aware of the current locale of each HTTP request. This is done by adding a custom renderer and using the before_render hook to configure i18n-js accordingly for each render call.

seoyoochan

#! /usr/bin/env ruby

# Author: Yoochan Seo
# Email: supergnee@gmail.com
# If you want this program executable,
# `chmod 755 largest`

=begin
  ./largest 99, 997, 101, 2, 33 # execute this program and pass your value
  

seoyoochan

# This is a skeleton for testing models including examples of validations, callbacks,
# scopes, instance & class methods, associations, and more.
# Pick and choose what you want, as all models don't NEED to be tested at this depth.
#
# I'm always eager to hear new tips & suggestions as I'm still new to testing,
# so if you have any, please share!
#
# @kyletcarlson
#
# This skeleton also assumes you're using the following gems: