http://www.datatables.net

Things I like to do with default generated MVC code from Visual studio:

1. Add an IOC container

I use Windsdor Castle that can be found here . The tutorial there will show how to add Windsdor IOC controller to the MVC 3 application. It shows how to download and reference Windsdor but I prefer Nuget way.

• install-package Castle.Windsor

2.  Log4Net for logging

There is a Windsdor way of plugging in Log4Net. Its package can be referenced using nuget :

• install-Package Castle.Windsor-log4net

Then after creating necessary installer class for Log4Net, a log4net.config file and its related table can be created from here.

3. Membership Framework

I like membership framework for creating login.The default template has sample code for register/login.But sometimes it is not enough, you may use your own login while extending from MembershipProvider.

4. Separate Entity Model and View Model

In one of the small MVC projects I had some data models created from Model First approach. Till some point the output data required was in same format as the Entities but then the requirements started changing. At that point, it did not made much sense to change the database itself but rather use an adapter. So as a rule, the models that Views use are separate from the models that EF uses. It also helps to avoid some problems that occurs when using data models entities directly as View model.

View < – > ViweModel < …….. > Data Model <-> Database

.. more to be added.

There are terribly long ugly URLs which you have no way to copy except u really copy paste or firefox sync or XYZ sync it. Or you could copy the URL and generate a goo.gl link and then QR image from there.

You can run this bookmarkleet ( just browse any URL and when you are there click this ) and all links will have a QR image on right clicking the link.

Drag the following link and drop it in your browser’s bookmark.

QR Image

Thanks Manish for asking me to blog about it.

https://github.com/valums/file-uploader

It Works.

Facebook, FacebookWeb, FacebookWebMvc

But still have some bugs

HTML5’s window.localStorage can store anything. But for storing an array it’s a bit tricky.

To store an array suppose:

var names = [“A”,”B”];

Storing :

localStorage.setItem("names", names.join(‘|||’)); 

Retriving :

var names = localStorage.getItem("names").split(‘|||’);

suppose “data” contains an array of object :

{"data": [
      {
         "id": "1",
         "name": "B"
      },
      {
         "id": "2",
         "name": "A"
      }] }

Then the sort() method of that array can take a custom function just

like IComparer in C# and sort the array in-memory. 

 

var data = doc.data.sort(function(me,him){
		return me.name.localeCompare(him.name);
	});

This will sort the objects above comparing with its name property and 

results into a sorted array of objects with ascending name property. 

 

This blog is for my own reference. 

Was about to write code for RSS thingy but then I found this :

In Namespace :  System.ServiceModel.Web
			

 

XmlReader reader = XmlReader.Create("http://localhost/feeds/serializedFeed.xml");

SyndicationFeed feed = SyndicationFeed.Load(reader);

 

MSDN source : http://msdn.microsoft.com/en-us/library/bb515814%28v=VS.90%29.aspx

Google’s URL shortening service http://goo.gl is the most fastest service available.

It had been released before operable only from google toolbar and no API, but some people did some hack and extracted the JavaScript that it used.

Now, it does provide a neat API.

With goo.gl we can not only create short url but also a QR image that can be used by barcode scanner for mobile devices.

An example of post method :

curl https://www.googleapis.com/urlshortener/v1/url \
  -H 'Content-Type: application/json' \
  -d '{"longUrl": "http://www.google.com/"}'

would have a JSON response as : 

{
 "kind": "urlshortener#url",
 "id": "http://goo.gl/fbsS",
 "longUrl": "http://www.google.com/"
}

A QR code can be generated just adding .qr to the short URL .

http://goo.gl/fbsS.qr

Well at least I brought my blog back . Still as I remember, the sites that are not working are

t.bipins.net
notes.bipins.net
facebook.bipins.net
chatis.finally.in
*.finally.in

and few other that I cant remember right now.

(jobs)index3.html is fixed, thanks to a friend who reported it was not working.

Sorry for my friends who used some of my web pages.

If you landed to this blog then you must have got above exception.

if not : 
     When you create a facebook app, and try the first example given in facebook php sdk, this error occurs. It’s weird and annoying coz this is where you start the development of the application.

The solution:

found at http://forum.developers.facebook.net/viewtopic.php?pid=258460

add this between after include of facebook library and before creating facebook object.

Facebook::$CURL_OPTS[CURLOPT_SSL_VERIFYPEER] = false;
Facebook::$CURL_OPTS[CURLOPT_SSL_VERIFYHOST] = 2;

something like this

require ‘src/facebook.php’;

Facebook::$CURL_OPTS[CURLOPT_SSL_VERIFYPEER] = false;
Facebook::$CURL_OPTS[CURLOPT_SSL_VERIFYHOST] = 2;

// Create our Application instance (replace this with your appId and secret).
$facebook = new Facebook(array(
  ‘appId’  => FACEBOOK_APP_ID,
  ‘secret’ => FACEBOOK_SECRET,
  ‘cookie’ => true,
));

Happy coding

First, to create a like button for a static URL:

1. goto http://developers.facebook.com/docs/reference/plugins/like

2. Enter URL and other details

3. Get code

4. Put it in your web page

That takes care of how to put a like button for 1 page.

Now for dynamic pages, where page’s content is changing and you would want a unique button for individual url/page/content and different text to be displayed on facebook wall.

For that there are open graph tags tags that facebook provided on page http://developers.facebook.com/docs/reference/plugins/like

The tags are :

og:title , og:type, og:image , og:url , og:site_name , fb:admins or fb:app_id

you add those tags as

<meta property="og:tag name" content="tag value"/>

All tags are compulsory.

og:title tag will contain text to display on your wall after you click the like button.

og:url will contain the actual URL of dynamic page

fb:admins add your own facebook id so that you will be admin of your page. It allows you to see who have clicked on the like button.

Then get the code for your site and generate the part after

href=http…. in that code dynamically. that would be your dynamic page’s URL.

example : http://www.bipins.net/q/?id=15

The highlighted parts are the ones that are generated dynamically.

<html xmlns="http://www.w3.org/1999/xhtml" xmlns:og="http://opengraphprotocol.org/schema/" xmlns:fb="http://www.facebook.com/2008/fbml">

<head>

<title>Nothing great was ever achieved without enthusiasm.</title>

<meta property="og:site_name" content="Quotes"/>	<meta property="og:title" content="Nothing great was ever achieved without enthusiasm."/>	 <meta property="og:type" content="blog" />	 <meta property="og:image" content="http://bipins.net/favicon.ico" />	 <meta property="fb:admins" content="98634567894" />	 <meta property="og:url" content="http://bipins.net/q/?id=15" /></head><body><h2> Nothing great was ever achieved without enthusiasm. </h2>

<iframe src="http://www.facebook.com/plugins/like.php?href=http%3A%2F%2Fwww.bipins.net%2Fq%2F%3Fid=15&amp;layout=standard&amp;width=450&amp;action=like&amp;show_faces=true&amp;font=verdana&amp;colorscheme=light&amp;height=80" scrolling="no" frameborder="0" style="border:none; overflow:hidden; " allowTransparency="true"></iframe></body></html>

Usage:

* It can be used to create sites like http://www.justliking.com/

* Create your own like widget for your website / dynamic pages / blog

1. Create a bitmap image
2. Create a graphics object from Bipmap image
3. Draw text using graphics object onto that bitmap image
4. Save bitmap image into desired format using Response.outputstream
This will directly send the image to the browser.

What’s the use ?
* Image of text on demand. You can use <img src=”http://location/?text=hello” />

* more parameters you can add to render text on different fonts or do any karate you wish

* or whatever comes to your mind ….

demo

Code: which you’d put on Page_Load

Bitmap objBMP;
Graphics objGraphics;
Font objFont;

int height =30
int width = 200
Color bgcolor = Color.White;
string fontname =”Arial”;
int fontsize = 10;
FontStyle fontstyle = FontStyle.Regular;

string input = “Sample Text”

Brush brushColor = Brushes.Black;
int textX = 0;
int textY = 3;
ImageFormat imgFormat = ImageFormat.Jpeg;
objBMP = new System.Drawing.Bitmap(width, height);

objGraphics = Graphics.FromImage(objBMP);
objGraphics.Clear(bgcolor);

objGraphics.TextRenderingHint = TextRenderingHint.SystemDefault;

objFont = new Font(fontname, fontsize, fontstyle);

objGraphics.DrawString(input, objFont, brushColor, textX, textY);

Response.ContentType = “image/jpeg”;

objBMP.Save(Response.OutputStream, imgFormat);

objFont.Dispose();
objGraphics.Dispose();
objBMP.Dispose();

- created google app engine account

- downloaded sdk

- ran thru the “getting started”

Now, it hosts a python application.

The cool part is, it runs on google app engine also known as GAE ( does not sound so good )

офис обзавеждане

They have their own data store, the DJango like data model, GQL for accessing and querying the data, cool admin interface to do lot of things.

So I made this app    http://hamro-app.appspot.com   from the tutorials.

Now, later I found out, which is quite exciting for me, is that they support custom domain names,  like i can use my own domain name to host the app, so the same app can be accessed through http://hamro-app.bipins.net . Its just a test app though. So, now I have python powered, highly scalable, web application / service. Thanks to app engine.

But I felt I can make that thing too . So I made it.

http://notes.bipins.net (beta)

Integrated with TinyMCE.

One can:

1. Save and Retrive

Its on beta and I’ve used SQLite for quick POC ( proof of concept ). I’ll migrate it to MSSQL database soon) Currently text size limitation is 4000 char. After migration to MSSQL I’ll increase it to text –> 2 ^{^ 31 characters.}

To be done :

1. Password protect documents

2. Export to .pdf

3. Export to .doc

Please send your suggestions to mail [at] bipins.net

Day One: Python Crash course : http://hetland.org/writing/instant-python.html

Then what? Then I asked the Guru again and he suggested me few. He gave me links to web.py

Day Two: http://webpy.org/

Now, I understood how the genious kid made his server in python and the app thing he had been running at his VPS. I wanted a server too . But my hosting provider Reliablesite.net does not support python. Anyways, no probs, I can do it my way. Hosted on my own machine to test http://python.bipins.net points to my router and then to my laptop

Then what? I asked the Guru again. He said to learn about dictionaries, web.py , mysql, meta programming  . He had worked in some porting of python to .net or vice versa or dunno something like that. Too much to chew. I chewed just a little bit, web.py thing was good enough for me.

Was trying to configure apache and mod_python , dunno what went wrong. Anyway , tried then in IIS and holy coolness, it worked ….. yippie .. followed this link http://net4geeks.com/index.php?option=com_content&task=view&id=48&Itemid=1

and the test app run succesfully at http://python.bipins.net/python/python.py

Now what ?

same question repeats again and again. postponed the question to few days later. Even postponed farmville for few days and planted watermelons, takes 4 days to grow . Will write about it later.

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/*
A non recursive approach to the problem and similar problems which has to generate permutation of certain set of characters.

The idea here is to first find the number of possible combinations of output.
Say, n is the length : possible combination  = n!
Then to find the formula that would repeat the pattern. The recursive method broken down into linear/ incremental formula.

The recursion is converted to a loop of   size n!.

A technique should be generated that could give us the combination output given any instance of value of loop index.

Say if n=4,  n! = 24.
So at any instance, say when loopindex = 11 then it should give the sequence that would be generated on 11th position.

For that, we find out position of each character in the remaining set.
say, for    given  "1234"
1st char will be  at position  index / (n-1)!  =  11/ 6 = 1  , so first char = 2;
now the given set should exclude the output char =>   remaining "134"
now in the remaining set , the index also decreases
the decrement of index , ie. 11   will be = index % (n-1)! = 11 % 6 = 5

Again,   index / (n-1)! = 5 / (3-1)! = 0 , so char = 1
remaining set = "34"

and so on

It can be used for any amount of number or characters.

*/

#include<iostream>
#include<string>

using namespace std;
int facto(int x)
{
    int fact=1;
    while(x>0) fact*=x--;
    return fact;
}

int main(int argc, char **argv)
{
    string s;
    int len,fact,rem=0,pos=0;

    cin>>s; // Input is take as string, it can be checked if it is a number or not, I'm just making it generic
    len=s.size();
    fact = facto(len);
    // Main loop
    for(int i=0;i<fact;i++)
    {
        string str = s;
        rem = i;
        cout<<i+1<<". ";
        for(int j=len;j>0;j--)
        {
            int div = facto ( j-1);
            pos = rem / div; // finding out position
            rem = rem % div; // adjusting the index value
            cout<<str.at(pos); // output char
            str = str.erase(pos,1); // decreasing the problem set size
        }
        cout<<endl;
    }
}

well, using stdarg.h we could create a function that can take any number of parameters. Then just parsing through each argument and writing it into standard output.

http://www.careercup.com/question?id=139667&form=comments

#include <stdio.h>
#include <stdlib.h>
#include <stdarg.h>
#include<string.h>

#define STDOUT 1
#define MAX_INT_LEN 10

//function foo taken from manpages of stdarg
void Printf(char *fmt, …)
{
    va_list ap;
    int d;
    char c, *s;
    va_start(ap, fmt);
    while (*fmt)
        switch (*fmt++) {
            case ‘s’: /* string */
                s = va_arg(ap, char *);
                write(STDOUT, s, strlen(s));
                break;
            case ‘d’: /* int */
                d = va_arg(ap, int);
                s = malloc(MAX_INT_LEN);
                sprintf(s, "%d", d); // lame attempt to convert int to string, no itoa() in linux
                write(STDOUT, s, strlen(s));
                free(s);
                break;
            case ‘c’: /* char */
                /* need a cast here since va_arg only
                   takes fully promoted types */
                c = (char) va_arg(ap, int);
                write(STDOUT, &c, 1);
                break;

        }
    va_end(ap);
}

int main() {
    Printf("%s %d %c", "hello world", 123456 , ‘s’);
}