This tutorial shows you how to create a grouped grid in Ext JS. Ext JS grid grouping is a common scenario in business applications where users need to analyze tabular data grouped by different attributes. The Ext JS application that you will create in this tutorial will render an Ext JS grid containing fictional data describing model cars.
So I have two million song lyrics in a big file. Don't ask me how I got it. The point is that I want to find the most poetic phrase of all time. Using Python, I'll show you how to find duplicate codes and find the most poetic phrase of all time.
During the post-conference drinks I was chatting with a developer - Matt from New Zealand if my memory serves - and he came out with what some might think was a surprising comment. He said: “I’d never thought of a project like that before.”
I don’t do a lot of plotting in my job, but I recently heard about a website called Plotly that provides a plotting service for anyone’s data. They even have a plotly package for Python (among others)! So in this article we will be learning how to plot with their package. Let’s have some fun making graphs!
This article describes solutions for an exercise that was given to students by economics faculty who visited my computer science department 10 years ago. The task is relatively easy but somehow we couldn't manage it at that time. The program had to be written in C, which we didn't know well and was one of the reasons for the failure. Two weeks ago I decided to finish this problem so I sat in front of my PC and implemented two possible solutions for it in Java.
I was once told in a performance review that “perception is reality.” I was infuriated, and the words stuck in my mind as the most toxic thing a manager could say to an employee. Let me tell you what “perception is reality” means, and why you should plan on leaving your job the moment you hear it:
Make sure you didn't miss anything with this list of the Best of the Week in the Performance Zone (October 31 - November 07). This week's topics include scalabable lists for java, scalability obstacles, logging processes, getting an application version number, and flash storage security.
One of the more important things that you have to remember is that you should always be ready for failure. As developers, we are used to thinking about stuff like that in our code, but this is true for real life as well.
Developers have a tendency to work a lot. Maybe your job is a grueling nine-to-five torture, or maybe it's a dream come true. Either way, there's a good chance that you go home and keep working on something of your own. Well, we want to hear about it! Leave a comment and let us know what you're working on.
I’ve been doing some work with Focused Objective lately, and today the following question came up in our discussion. If you’re sampling from a uniform distribution, how many samples do you need before your sample range has an even chance of covering 90% of the population range?
This article will show you how to check an application version number on Windows. This can be helpful if you need to check if key software needs to be upgraded or perhaps you need to make sure it hasn’t been upgraded because some other application requires the older version.