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How do I uniquely identify computers visiting my web site?
...ngerprinting method for recognising a user with a high level of accuracy:
https://panopticlick.eff.org/static/browser-uniqueness.pdf
We investigate the degree to which modern web browsers
are subject to “device fingerprinting” via the version and configuration information...
Generating Guids in Ruby
...
Google yields the following Ruby library:
http://raa.ruby-lang.org/project/ruby-guid/
Also, over at http://www.ruby-forum.com/topic/99262 they say you can install a gem (execute gem uuid on the command line to install it) and then do
gem 'uuid'
puts UUID.new
in y...
Open-Source Examples of well-designed Android Applications? [closed]
...n-source, but not part of the SDK. The source for those projects is here: https://android.googlesource.com/ (look at /platform/packages/apps). I've referred to those sources several times when I've used an application on my phone and wanted to see how a particular feature was implemented.
...
What is an xs:NCName type and when should it be used?
...?
\i and \c are multi-character escapes defined in XML Schema definition.
http://www.w3.org/TR/xmlschema-2/#dt-ccesN
\i is the escape for the set of initial XML name characters and \c is the set of XML name characters. [\i-[:]] means a set that consist of the set \i excluding a set that consist of...
NASM x86汇编入门指南 - C/C++ - 清泛网 - 专注C/C++及内核技术
NASM x86汇编入门指南NASM x86汇编入门指南原文链接:http: docs.cs.up.ac.za programming asm derick_tut #helloworld内容1.介绍2.为什么写这篇文章3.NASM(The...NASM x86汇编入门指南
原文链接:http://docs.cs.up.ac.za/programming/asm/derick_tut/#helloworld
内容
1. ...
Keyboard shortcut to “untab” (move a block of code to the left) in eclipse / aptana?
...b outdents again :)
Here's where the standard shortcut keys are covered:
http://wiki.eclipse.org/User_Interface_Guidelines#Standard_Accelerators
You'll find many of the more esoteric ones here:
http://wiki.eclipse.org/FAQ_What_editor_keyboard_shortcuts_are_available%3F
...
Get selected option text with JavaScript
...r text = element.options[element.selectedIndex].text;
// ...
}
DEMO: http://jsfiddle.net/6dkun/1/
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Checking if an instance's class implements an interface?
... echo "Yes!";
}
class_implements() is part of the SPL extension.
See: http://php.net/manual/en/function.class-implements.php
Performance Tests
Some simple performance tests show the costs of each approach:
Given an instance of an object
Object construction outside the loop (100,000 iterati...
What are POD types in C++?
...bool, __is_pod(_Tp)>
{ };
}
(From header type_traits)
Reference:
http://en.cppreference.com/w/cpp/types/is_pod
http://en.wikipedia.org/wiki/Plain_old_data_structure
http://en.wikipedia.org/wiki/Plain_Old_C++_Object
File type_traits
...
“unadd” a file to svn before commit
...erted, Subversion provides no way to get back those uncommitted changes.
http://svnbook.red-bean.com/en/1.7/svn.ref.svn.c.revert.html
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