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Social Software
List of Social Softwareshttp://en.wikipedia.org/wiki/List_of_social_software
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DOM @ XML
The XML Document Object Model (XML DOM) defines a standard way for accessing and manipulating XML documents.The DOM presents an XML document as a tree-structure (a node tree), with the elements,...
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Delete vs Truncate @ SQL
SQL Server TRUNCATE is a DDL command and cannot be rolled back. All of the memory space is released back to the server. DELETE is a DML command and can be rolled back. Both commands accomplish...
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rails
A Rails scaffold is an autogenerated framework for manipulating a model.When we run the generator, we tell it that we want a scaffold for a particularmodel (which it creates) and that we want to access...
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More Rails
Class names are mixed case (each wordstarts with a capital letter, and there are no breaks). Table names (and, aswe’ll see later, variable names and symbols) are lowercase, with an underscorebetween...
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still more rails
URL routingAn incoming URL always maps to some action within a controller. A controller is simply a Ruby class, and each action implemented by the controller is a public method within the controller...
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Metaprogramming @ Ruby
Metaprogramming is the writing of programs that write or manipulate other programs (or themselves) as their data or that do part of the work that is otherwise done at run time during compile time. In...
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ActionScript
Some of the differences between ActionScript and JavaScript are as follows:• ActionScript does not support browser-specific objects such as Document, Window,and Anchor.• ActionScript does not...
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Ubiquitous Ubuntu
gconf-editorinstalling make commandhttp://www.linuxforums.org/forum/ubuntu-help/66650-installing-make-command-offline.html
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File Handling @ Python
A file object maintains state about the file it has open. The tell method of a file object tells you your current position in the open file. Since you haven't done anything with this file yet, the...
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Loops @ Ruby
n.times {|i| puts i}Well, the method Integer#times iterate self times (n in this) and for each iteration calls the block, gives it the current value।something do |line| #process something and line...
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copying data from one table to another @ mysql
insert into tbl (field1,field2) select field1,field2 from users
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Counting number of lines in a file @ python
f = open(filename)lines = f.readlines()f.close()print "%s has %d lines." % (filename, len(lines))
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Commands @ FreeBSD
Delete all contents of a directoryrm -f *Download a file from a URLwget URLDelete a directoryrm -r dirnameDelete a filerm -f filenameList Processesps axKilling a processKill -9 PIDFinding a filefind...
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More Commands @ FreeBSD
Clearing the Terminal:ClearAdding a User:adduser [-u uid [-o]] [-g group] [-G group,...][-d home] [-s shell] [-c comment] [-m [-k template]][-f inactive] [-e expire mm/dd/yy] [-p passwd] [-n] [-r]...
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Django Stuff - 1
Projects vs. appsWhat’s the difference between a project and an app? An app is a Web application that does something — e.g., a weblog system, a database of public records or a simple poll app. A...
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render_to_response()
render_to_response()Because it’s such a common idiom to load a template, fill a Context and return an HttpResponse object with the result of therendered template, Django provides a shortcut that lets...
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Django Forms
Start with this basic Form subclass, which we’ll call ContactForm:from django import newforms as formsclass ContactForm(forms.Form): subject = forms.CharField(max_length=100) message =...
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