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Showing posts from May 22, 2012

How can I pre-compress files with mod_deflate in Apache 2.x?

I am serving all content through apache with Content-Encoding: zip but that compresses on the fly. A good amount of my content is static files on the disk. I want to gzip the files beforehand rather than compressing them every time they are requested.

How to tune Tomcat 5.5 JVM Memory settings without using the configuration program

I need to configure Tomcat memory settings as part of a larger installation, so manually configuring tomcat with the configuration app after the fact is out of the question. I thought I could just throw the JVM memory settings into the JAVA_OPTS environment variable, but I'm testing that with jconsole to see if it works and it... doesn't.

Cleanest & Fastest server setup for Django

I'm about to deploy a mediumsized site powered by Django. I have a dedicated Ubuntu Server.

How to add a Facebook "Like' button to an AJAX driven page

I have trolled the net + Stackoverflow and have not found an adequate answer to this question and before I start the trial and error process of finding my own solution, I thought I would turn to the Stackoverflow braintrust and see if there was already a successful implementation.

How do I write Facebook apps using Django?

Am in the process of developing some app for Facebook using Django! I've started first by building the app in Django and its shaping up pretty well, now am wondering how can I make it a Facebook app.

Facebook gives "Unsafe JavaScript attempt to access frame with URL' error in Chrome

My sample Facebook app was working great yesterday in Chrome. The page integrates Silverlight ad Facebook via the JavaScript SDK. I can check basic login status, login to Facebook, get your name and log out.

Opengraph validation for HTML5

Is there any way to get facebook's crappy open graph meta tags to validate if my doctype is <!DOCTYPE html> (HTML5)?

How do I use sudo to redirect output to a location I don"t have permission to write to?

I've been given sudo access on one of our development RedHat linux boxes, and I seem to find myself quite often needing to redirect output to a location I don't normally have write access to.

Why doesn"t "cd' work in a bash shell script?

I'm trying to write a small script to change the current directory to my project directory:

In the bash script how do I know the script file name?

How can I determine the name of the bash script file inside the script itself?

How do I prompt for input in a Linux shell script?

I want to pause input in a shell script, and prompt the user for choices. The standard 'Yes, No, or Cancel' type question. How do I accomplish this at a typical bash prompt?

How do I put an already running process under nohup

I have a process that is already running for a long time and don't want to end it.

Is there any reason to use a synchronous XMLHttpRequest?

It seems most everyone does asynchronous requests with XMLHttpRequest but obviously the fact that there is the ability to do synchronous requests indicates there might be a valid reason to do so. So what might that valid reason be?

Unexpected Caching of AJAX results in IE8

I'm having a serious issue with Internet Explorer caching results from a JQuery Ajax request.

jQuery ajax (jsonp) ignores a timeout and doesn"t fire the error event

Hey fellow jQuery lovers, To add some basic error handling, I wanted to rewrite a piece of code that used jQuery's $.getJSON to pull in some photo's from Flickr. The reason for doing this is that $.getJSON doesn't provide error handling or work with timeouts.

Scroll to bottom of div?

I am creating an ajax chat in rails and I am trying to get a div to scroll to the bottom without much luck.

What is the best AJAX library for Django?

Which and why is the best AJAX library for django? Which one has the biggest database of tutorials, books and most detailed documentation?

.NET String to byte Array C#

How do I convert a string to a byte array in .NET (C#)?

What is the worst gotcha in C# or .NET?

This question is similar to this one , but focused on C# and .NET.

Why is it important to override GetHashCode when Equals method is overriden in C#?

Given the following class public class Foo { public int FooId { get; set; } public string FooName { get; set; } public override bool Equals(object obj) { Foo fooItem = obj as Foo; return fooItem.FooId == this.FooId; } public override int GetHashCode() { // Which is preferred? return base.GetHashCode(); //return this.FooId.GetHashCode(); } }

Why is the C# "as' operator so popular?

In development blogs, online code examples and (recently) even a book, I keep stumbling about code like this:

Lazy load images in UITableView

I have some 50 custom cells in my UITableView. I want to display an

How to stop UITextView from scrolling up when entering it

I have a UITextView included in a UITableViewCell . The layout is correct when the views are initially displayed, but once I click in the UITextView it automatically scrolls up a bit and the top half of the characters on the first line becomes invisible.

How to install iPhone application in iPhone Simulator

I have a mySample.app file - an iPhone application developed by xcode.

Default height for section header in UITableView

I want to set the height of the first header in my UITableView. For the other headers I want them to remain the default height. What value/constant can I put in place of "someDefaultHeight" in the code below?

ffmpeg for a android (using tutorial: "ffmpeg and Android.mk')

I am trying to compile ffmpeg for a android. I have found several posts on this theme but non of these seems to work. If tried to build ffmpeg like it is posted on [1]. Did anybody successfully compile ffmpeg using theses tutorial? I am not sure how to realize step 4 to 5.

Screenshot Android

How can I take screenshot of selected area of phone-screen not by any program, but from code.

Android SQLite: nullColumnHack parameter in insert/replace methods

The Android SDK has some convenience methods for manipulating data with SQLite. However both the insert and replace methods use some nullColumnHack parameter which usage I don't understand.

EditText, inputType values (xml)

Where can I find the values that inputType can have? I'm aware of http://developer.android.com/reference/android/text/InputType.html , but how should the values look like in layout xml files?

Android: disabling highlight on listView click

I want to disable the orange highlight that occurs when touching a listView row. So far in my xml I have tried the following:

Creating HTML: PHP server-side vs. jQuery client-side

This is a design question. I have data that needs to go into an HTML table, which will later be manipulated by the user. Basically the user will be able to select items in the table rows.

Commitment to Zend Framework - any arguments against?

I am refurbishing a big CMS that I have been working on for quite a number of years now. The product itself is great, but some components, the Database and translation classes for example, need urgent replacing - partly self-made as far back as 2002, grown into a bit of a chaos over time, and might have trouble surviving a security audit.

Static classes in PHP via abstract keyword?

According to the PHP manual , a class like this: abstract class Example {}

Most efficient way to get next letter in the alphabet using PHP

Given any character from a to z, what is the most efficient way to get the next letter in the alphabet using PHP?

Which Java profiler is better: JProfiler or YourKit?

Which profiler is better for general purpose profiling and heap analysis? 90% of our apps are standalone command line programs with substantial database and numeric processing. The other 10% are webapps/servlet container apps (with very little JSP and NO SCRIPLETS!). Target user would be Sr Software Engineer with 5-10 years of industry experience. We need support only for Sun JDK 5 and.