sobstel

# `ERROR:  Error installing nokogiri:
# ERROR: Failed to build gem native extension.
# 
#   current directory: /usr/local/var/rbenv/versions/2.3.1/lib/ruby/gems/2.3.0/gems/nokogiri-1.7.0/ext/nokogiri
# /usr/local/var/rbenv/versions/2.3.1/bin/ruby -r ./siteconf20170103-68488-r71c9j.rb extconf.rb --with-xml=/usr/local/Cellar/libxml2/ --use-system-libraries
# checking if the C compiler accepts ... yes
# checking if the C compiler accepts -Wno-error=unused-command-line-argument-hard-error-in-future... no
# Building nokogiri using system libraries.
# ERROR: cannot discover where libxml2 is located on your system. please make sure `pkg-config` is installed.
# *** extconf.rb failed ***

sobstel

<VirtualHost *>
  ServerName auth.dev
  DocumentRoot "/var/www/auth"
  ProxyPassMatch ^(/.*\.php)$ fcgi://127.0.0.1:9000/var/www/auth
  SetEnvIf Authorization "(.*)" HTTP_AUTHORIZATION=$1
</VirtualHost>

sobstel

class Router
  Route = Struct.new(:pattern, :block)

  class RouteSet
    def on(pattern, &block)
      Router.routes.push Route.new(pattern, block)
    end
  end

  @routes = []

sobstel

// same arg type and return type
withUID<T>(obj: T)

// "extends" helps providing some constraints
// eg <T extends object>
withUID({a: 1}) // valid
withUID("wrong way") // NOT valid

// default value type (string)
A<T=string> { name: T }

sobstel

def equi(a)
  lower_elements_sum = 0 
  higher_elements_sum = a.inject(:+)
  
  a.each_with_index do |el, i|
    lower_elements_sum += a[i - 1] if i > 0
    higher_elements_sum -= el
    
    return i if lower_elements_sum == higher_elements_sum
  end 

sobstel

const API_URL = '...';
const TIMEOUT = 10; // seconds

export default (path) => {
  /* global fetch */
  const req = fetch(API_URL + path);

  const timeout = new Promise((resolve, reject) => {
    return setTimeout(() => reject(new Error('request timeout')), TIMEOUT * 1000);
  });

sobstel

Effective Ruby

#1 (Almost) Everything is true

• Every value is true except false and nil.
• The number zero is true in Ruby.
• Use the nil? method to differentiate between false and nil.

#2 All objects could be nil

sobstel

❯ react-native run-ios --simulator="iPhone 7"

Found Xcode workspace Nabobil.xcworkspace

Could not find iPhone 7 simulator

Error: Could not find iPhone 7 simulator
    at resolve (...)
  
sed -i '' 's/startsWith/includes/g' node_modules/react-native/local-cli/runIOS/findMatchingSimulator.js

sobstel

# error: Build input file cannot be found: '/Users/sobstel/Projects/nabobil/nabobil-mobile/node_modules/react-native/third-party/double-conversion-1.1.6/src/diy-fp.cc'

cd node_modules/react-native/scripts && ./ios-install-third-party.sh && cd ../../../
cd node_modules/react-native/third-party/glog-0.3.5/ && ../../scripts/ios-configure-glog.sh && cd ../../../../

sobstel

module Authenticable
  extend ActiveSupport::Concern

  # Filter to use with before_action
  def authenticate_user
    jwt_token
  rescue JWT::DecodeError => e
    render json: { error: e.message }, status: :unauthorized
  end