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James Yang jamesyang124

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@jamesyang124
jamesyang124 / rails_routing.md
Last active October 30, 2015 15:27
http://guides.rubyonrails.org/routing.html

#Rails Routing

  1. We can define customed url helper by :as

    get "/photos/:id", to: "photos#show", as: :"show_photo"

<%= link_to 'Photo Record', show_photo_path(15) %>

show_photo_path(15)
@jamesyang124
jamesyang124 / rails_active_record_association.md
Created November 9, 2015 11:12
http://guides.rubyonrails.org/association_basics.html

A foreign key is a column (or columns) that references a column (most often the primary key) of another table.

Add index to foreign key is a good practice if that foreign key is read a lot.

# 1 to 1 association
# create :another_model_id foreign_key in that model
belongs_to :another_model

# 1 to m association
@jamesyang124
jamesyang124 / angular1_note.md
Created November 10, 2015 06:33
udemy course

#AngualrJS Note

  1. Angular leverage dependency injection to import modules. The key concept is using Function.toString() to track params. Inject by its params to achieve loosley coupling architecture also help with the js minify issue.

    app.controller("MyController", function($scope, $service){
	// code in here
}); 

// better use for minify
@jamesyang124
jamesyang124 / notes_programming_in_scala.md
Last active July 30, 2022 18:13
Notes for programming in Scala 2nd edition.

#Note for Programming in Scala


##Chp.0 SBT & Scala Interpreter

  1. Call scala interpreter by sbt.

    // enter scala interpreter
@jamesyang124
jamesyang124 / slim-html5-boilerplate
Created January 13, 2016 11:25
doctype html
| <!--[if lt IE 8 ]><html class="no-js preload lt-ie10 lt-ie9 lt-ie8 ie-suck"><![endif]-->
| <!--[if IE 8 ]><html class="no-js preload lt-ie10 lt-ie9 ie-8"><![endif]-->
| <!--[if IE 9 ]><html class="no-js preload lt-ie10 ie-9"><![endif]-->
| <!--[if gt IE 9]><!-->
html.no-js
| <!--<![endif]-->
head
meta(charset='utf-8')
meta(http-equiv='X-UA-Compatible' content='IE=edge,chrome=1')
@jamesyang124
jamesyang124 / review_rfc6265.md
Last active May 22, 2022 18:52
Quick review of RFC6265 - HTTP State Management Mechanism https://tools.ietf.org/html/rfc6265

HTTP State Management Mechanism

Syntax Example

  • Origin servers SHOULD NOT fold multiple Set-Cookie header fields into a single header field. The usual mechanism for folding HTTP headers fields (i.e., as defined in [RFC2616]) might change the semantics of the Set-Cookie header field because the %x2C (",") character is used by Set-Cookie in a way that conflicts with such folding.



  


  




    


          
    

      

        
        

          

              @jamesyang124
          

          

            
                jamesyang124
                / gist:246ba6a1e455b13370e0
            
            

              Created
              February 18, 2016 03:10
                — forked from perusio/gist:1326701
            

              
                Mobile device detection in Nginx with just 7 lines of configuration
              
          

        

      

        

  

    
    


        



  


  

        

          
          ### Testing if the client is a mobile or a desktop.
        

        

          
          ### The selection is based on the usual UA strings for desktop browsers.
        

        

          
          

        

        

          
          ## Testing a user agent using a method that reverts the logic of the
        

        

          
          ## UA detection. Inspired by notnotmobile.appspot.com.
        

        

          
          map $http_user_agent $is_desktop {
        

        

          
              default 0;
        

        

          
              ~*linux.*android|windows\s+(?:ce|phone) 0; # exceptions to the rule
        

        

          
              ~*spider|crawl|slurp|bot 1; # bots
        

        

          
              ~*windows|linux|os\s+x\s*[\d\._]+|solaris|bsd 1; # OSes
        

  





    


  




    


          
    

      

        
        

          

              @jamesyang124
          

          

            
                jamesyang124
                / cmd_tools.md
            
            

              Last active
              February 28, 2020 17:38
            

              
                quick review for http://conqueringthecommandline.com/book/ps
              
          

        

      

        

  

      

    
Content Search


    

  • ack/ag, examples:
    • 



ag strings [path|files] --ignore="*.yml" --ignore="*.js.coffee"

# search readme at end of line
ag readme$



  


  




    


          
    

      

        
        

          

              @jamesyang124
          

          

            
                jamesyang124
                / gist:03e8711093c97c185ca5
            
            

              Created
              March 2, 2016 03:14
                — forked from jessedearing/gist:2351836
            

              
                Create self-signed SSL certificate for Nginx
              
          

        

      

        

  

    
    


        



  


  

        

          
          #!/bin/bash
        

        

          
          echo "Generating an SSL private key to sign your certificate..."
        

        

          
          openssl genrsa -des3 -out myssl.key 1024
        

        

          
          

        

        

          
          echo "Generating a Certificate Signing Request..."
        

        

          
          openssl req -new -key myssl.key -out myssl.csr
        

        

          
          

        

        

          
          echo "Removing passphrase from key (for nginx)..."
        

        

          
          cp myssl.key myssl.key.org
        

        

          
          openssl rsa -in myssl.key.org -out myssl.key
        

  





    


  




    


          
    

      

        
        

          

              @jamesyang124
          

          

            
                jamesyang124
                / js-performance-research.md
            
            

              Created
              April 12, 2016 10:00
                — forked from dypsilon/js-performance-research.md
            

              
                JS Performance Research
              
          

        

      

        

  

      

    
Memory Management and Performance


JavaScript engines such as Google’s V8 (Chrome, Node) are specifically designed for the fast execution of large JavaScript applications. As you develop, if you care about memory usage and performance, you should be aware of some of what’s going on in your user’s browser’s JavaScript engine behind the scenes.


Continue reading Writing Fast, Memory-Efficient JavaScript, great general overview of a Google employee


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