05.04.2014 20:15

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Floyd-Warshall Algorithm

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Tools: Word Cloud http://ift.tt/1iPxMky http://ift.tt/1mKMp9K http://timc.idv.tw...

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Tools: Word Cloud

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wordcloud - HTML5 Word Cloud

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04.04.2014 23:40

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A collection of the world's best client-side javascript libraries

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04.04.2014 23:26

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In our boot camps, students are introduced to several tools and libraries to expand the abilities of their code. Kalina, one of our current JavaScript students, compiled a list of these tools and wanted to share it with other Code Fellows.

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Reshared post from Best Quotations 4 U:

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Original Post from Best Quotations 4 U:

Simple things become complicated, When you expect too much.



English Quotes : http://ift.tt/1ghLCb9

Simple things become complicated, When you expect too much.jpg

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Disallow Robots Using Robots.txt http://ift.tt/1hovwwA User-agent: * Disallow: / User-agent...

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Disallow Robots Using Robots.txt

http://ift.tt/1hovwwA User-agent: *

Disallow: /

User-agent: *

Disallow: /administration/

User-Agent: googlebot

Disallow: /

Luckily I can add a robots.txt file to my development server websites that will prevent search engines from indexing them.

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Reshared post from Programming.com:

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Original Post from Programming.com:

Testing web pages on different browsers. #True #Chrome #Firefox #Opera #Safari #IE

browser.jpg

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Testing IFrames

maximize

Java HashMap的工作原理 http://ift.tt/1ouwFfP

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Java HashMap的工作原理

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面试的时候经常会遇见诸如：“java中的HashMap是怎么工作的”，“HashMap的get和put内部的工作原理”这样的问题。本文将用一个简单的例子来解释下HashMap内部的工作原理。首先我们从一个例子开始，而不仅仅是从理论上，这样，有助于更好地理解，然后，我们来看下get和put到底是怎样工作的。 [...]

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Scraping HTML documents that require POST data with YQL select * from html where url="http://cnn.com...

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Scraping HTML documents that require POST data with YQL

select * from html where url="http://cnn.com" and xpath="//a"

select content from html where url="http://cnn.com" and xpath="//a"

Post Data

select * from htmlpost where

url='http://ift.tt/1pVZixV'

and postdata="foo=foo&bar=bar" and xpath="//p"

http://ift.tt/1pVZkpy

http://ift.tt/1h8vlLI

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Ajax with jQuery - using YQL. Demo. Load Ajax Content · Get developer.yahoo.com. Source Code. Adding error handling and effects. Written by Christian Heilmann.

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GAE java delete all data from my local datastore? http://ift.tt/1fy80kC...

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GAE java delete all data from my local datastore?

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If you came here for a Java solution: Delete the following file:

{project root}/WEB-INF/appengine-generated/local_db.bin

How can I remove all entities or reset the local datastore on my dev_appserver? I accidentally recursively called a function to create an entity when testing. I am using the Google App-engine SDK on Vista with Python.

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JPA: Thread-safety when injecting EntityManager EntityManagerFactory is guaranteed to be thread-safe...

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JPA: Thread-safety when injecting EntityManager

EntityManagerFactory is guaranteed to be thread-safe, EntityManager is not.

@PersistenceUnit

private EntityManagerFactory emf;

EntityManager em = emf.createEntityManager();

@PersistenceContext

EntityManager em;

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As I wrote in post Why we need type-level injections in JavaEE, injecting EJB 3 stateful beans into servlet instance fields is not thread-safe. Along the same line, injecting EntityManager with @PersistenceContext into servle...

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Auto Completion when Select Category in G+ Community

Original Post from Jeffery yuan:

Auto Completion when Select Category in G+ Community

The Problem

When add posts to G+ community, we need select one category, usually there are 6+ or more categories in one community. So we have to scroll the category list to find the correct one.

The Suggestion

It would be great if it supports auto competition. So if we type J, it will only show categories which starts with J.

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Auto Completion when Select Category in G+ Community

Original Post from Jeffery yuan:

Auto Completion when Select Category in G+ Community

The Problem

When add posts to G+ community, we need select one category, usually there are 6+ or more categories in one community. So we have to scroll the category list to find the correct one.

The Suggestion

It would be great if it supports auto competition. So if we type J, it will only show categories which starts with J.

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Auto Completion when Select Category in G+ Community The Problem When add posts to G+ community, we ...

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Auto Completion when Select Category in G+ Community

The Problem

When add posts to G+ community, we need select one category, usually there are 6+ or more categories in one community. So we have to scroll the category list to find the correct one.

The Suggestion

It would be great if it supports auto competition. So if we type J, it will only show categories which starts with J.

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Using X-Frame-Options: the Clickjacking attack http://ift.tt/1pPuvoi https://...

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Using X-Frame-Options: the Clickjacking attack

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The Clickjacking attack allows to perform an action on victim site on visitor's behalf. Many sites were hacked this way, including Twitter and Facebook (both fixed). Clickjacking. The overall idea is simple. A visitor is lured to evil page. No matter how. “Click to get 1000000$” or whatever.

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Google App Engine and JPA http://ift.tt/1jz12Nu https://develope...

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Google App Engine and JPA

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Using JPA on the Google AppEngine is straight forward. For some reason the documentation on the official Google App Engine side is not very easy to read therefore a little example here. Create a new web project “de.vogella.gae.persistence.jpa”. Change the generated Servlet to “PersistsServlet” ...

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vagrantup: Create and configure lightweight, reproducible, and portable development environments. http...

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vagrantup: Create and configure lightweight, reproducible, and portable development environments.

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Set Up. Download and install Vagrant within minutes on Mac OS X, Windows, or a popular distribution of Linux. No complicated setup process, just a simple to use OS-standard installer. Configure. Create a single file for your project to describe the type of machine you want, the software that ...

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collegehumor http://ift.tt/NXz81P

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collegehumor

http://ift.tt/NXz81P

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Collections in Guava Google Guava is an open source library which provides lots of useful utility to...

Removing an element with the plain JavaScript remove() method http://ift.tt/1mqUyQz...

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Removing an element with the plain JavaScript remove() method

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The bulletproof way

var elem = document.getElementById("myDiv");

elem.parentNode.removeChild(elem);

The jQuery way

$('#myDiv').remove();

The new way. FTW.

var elem = document.getElementById("myDiv");

elem.remove();

Remove an element with the plain JavaScript remove() method available in the current DOM4 specs along with other mutation methods like append(), prepend(), before(), after() and replace().

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Checking for undefined: === versus typeof versus falsiness http://ift.tt/15pSGBZ...

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Checking for undefined: === versus typeof versus falsiness

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if (x === undefined) ...

if (typeof x === 'undefined') ...

if (!x) ...

The usual caveat applies: The condition of the above if statement will also be true for: null, false, -0, +0, NaN, "".

There are several ways of checking whether a variable has the value undefined. This blog post explains the differences. Checking via === Using strict equality [1] is the canonical way of checking for undefined: if (x === undefined) ... Changing undefined. undefined is a property of the global ...

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