weshouman

#how do we know object type in runtime :? that could be if: the language support RTTI

##type introspection figuring the metadata at runtime
https://en.wikipedia.org/wiki/Type_introspection

##C++ specific ###dynamic_cast way: Dynamic cast an object to a class, do we get a bad_cast exception, then it's not the right type

weshouman

git show revision:path/to/file  

shows the file path/to/file at a certain version.
ref: http://stackoverflow.com/a/338470

examples

check the file before the changes that are not commited yet

git show HEAD:app/models/event.rb

weshouman

C++ splitting

forward declaration and header inclusion

This is what happens when we forward declare without including the header file that includes the type
It sounds there are no way out of circular includes, thus comes the perks of having #ifndef, #define and #endif wrapping all our headers
For the current project, forward declaration is used in the header files to let the classes know about others' existence and later the header files are included in the cpp files
The forward declaration error means we have found a forward declared class yet the class declaration itself wasn't found

voxelmon.cpp: In member function ‘void Voxelmon::initialize_daycarestate_special()’:
voxelmon.cpp:53:23: error: invalid use of incomplete type ‘class CHILD’
 current = new CHILD();

weshouman

On The List:

Readings

How the original GoF patterns apply in Ruby Design Patterns in Ruby
General Ruby programming The Ruby Way
Good introduction to Rails Agile Web Development with Rails
Many general practices such as Don't Repeat Yourself The Pragmatic Programmer

Practicing

Design Patterns in Ruby book examples

weshouman

Install Bower

Install bower on the system (required by bower-rails gem)

npm install -g bower

Add Bower to the Gemfile

gem 'bower-rails'

weshouman

Understanding Promises

Async Javascript with Promises

Understanding Prototypes

Javascript Prototypes 1
Javascript Prototypes 2

Understanding function syntax

What The Function Series

What the function 1

weshouman

Transition messages

Following code displays log messages that get fired when state transitions happen,
watch for the error messages, in case any exists, if 404 is found for a requested object
check the templateURL naming the state shows in the developer tools console

Add the following to the html were angular is activated ie: anywhere into index.html.erb given that application.html.erb has angular activated

<script>

weshouman

Tagaini Jisho 2 File Structure

project
└──src
  │  tagaini_config.h //main application configurations
  └──core
      │  paths.h // a utility to search for a given filename (extensively used to get db files)
      │  // many other important utilities
      │
 └──gui

weshouman

URI

open_uri

Nokogiri

Official tutorials
Nokogiri usage with css selection
Accessing node element attributes

Capturing xpath, css selectors in chrome

A chrome extension for that

weshouman

testing using telnet and openssl

HTTP

open the connection

telnet www.google.com 80

make the request

GET /#q=walid HTTP/1.1