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  A plugin to update last_error in Delayed Job

delayed_job is a process based asynchronous task processing gem which can be ran at background. It will fork the specified number of processes to execute the tasks asynchronously. The task status is usually stored in the database so that it can be easily integrated into a Rails application where asynchronous job execution is desired. Normally when a job fails to execute or error occurs, it would save the error into the database with the column last_error. Ideally all these will be handled b...

   RUBY,RUBY ON RAILS,DELAYED JOB,LAST_ERROR     2017-11-18 13:05:49

  Why I Will Never Feel Threatened by Programmers in India

I got a call from a friend of a friend the other night. It was a fellow with whom I’d talked 11 months ago about a project he and his partner were looking to start. We established then that I wasn’t the guy for him, that I was likely too expensive for their big-dreams, small-means budget. Fast forward to present day: their project is still not launched, it’s still not right. They’ve paid for something between 600-700 hours of development with a firm in India, an...

   Indian programmer,Outsourcing,Poor quality,Low cost     2011-12-05 13:00:04

  Why I Will Never Feel Threatened by Programmers in India

I got a call from a friend of a friend the other night. It was a fellow with whom I’d talked 11 months ago about a project he and his partner were looking to start. We established then that I wasn’t the guy for him, that I was likely too expensive for their big-dreams, small-means budget. Fast forward to present day: their project is still not launched, it’s still not right. They’ve paid for something between 600-700 hours of development with a firm in India, an...

   Indian programmer,Outsourcing,Poor quality,Low cost     2011-12-05 13:00:13

  Why I Will Never Feel Threatened by Programmers in India

I got a call from a friend of a friend the other night. It was a fellow with whom I’d talked 11 months ago about a project he and his partner were looking to start. We established then that I wasn’t the guy for him, that I was likely too expensive for their big-dreams, small-means budget. Fast forward to present day: their project is still not launched, it’s still not right. They’ve paid for something between 600-700 hours of development with a firm in India, an...

   Indian programmer,Outsourcing,Poor quality,Low cost     2011-12-05 12:58:26

  Unfortunate Python

Python is a wonderful language, but some parts should really have bright WARNING signs all over them. There are features that just can't be used safely and others are that are useful but people tend to use in the wrong ways. This is a rough transcript of the talk I gave at my local Python group on November 15, with some of the audience feed back mixed in. Most of this came from hanging around the Python IRC channel, something I highly recommend. [update 2011-12-19: improved "array" cr...

   Python,Defects,Deprecated methods,Warning     2011-12-20 08:27:36

  Bash Shell Scripting - 10 Seconds Guide

This Bash shell scripting guide is not a detailed study but a quick reference to the BASH syntax. So lets begin... Common environment variables PATH - Sets the search path for any executable command. Similar to the PATH variable in MSDOS. HOME - Home directory of the user. MAIL - Contains the path to the location where mail addressed to the user is stored. IFS - Contains a string of characters which are used as word seperators in the command line. The string normally consists of the spac...

   Bash,Shell,Linux,Tutorial,10 seconds,Shortcut key     2012-02-28 08:05:41

  JavaScript delete specific item from array

Deleting an item from an array is easy using JavaScript’s built-in method splice(). However, if you are somewhat new to scripting, simply knowing about splice does not help you remove a certain item from an array. This article will solidly state the solution to this dilemma.If you want to remove a specific item from your array, you will simply use a basic loop and a conditional check with the splice()method.Here is a breakdown of what we will do in 3 easy steps, so tha...

   JavaScript,Array,Remove item,Splice,Dele     2011-09-16 16:38:52

   Python – parallelizing CPU-bound tasks with multiprocessing

In a previous post on Python threads, I briefly mentioned that threads are unsuitable for CPU-bound tasks, and multiprocessing should be used instead. Here I want to demonstrate this with benchmark numbers, also showing that creating multiple processes in Python is just as simple as creating multiple threads. First, let’s pick a simple computation to use for the benchmarking. I don’t want it to be completely artificial, so I’ll use a dumbed-down version of factorization...

   Python,Multitasking,Multiprocessing,CPU bound     2012-01-17 11:38:22

  PHP: a fractal of bad design

Preface I’m cranky. I complain about a lot of things. There’s a lot in the world of technology I don’t like, and that’s really to be expected—programming is a hilariously young discipline, and none of us have the slightest clue what we’re doing. Combine with Sturgeon’s Law, and I have a lifetime’s worth of stuff to gripe about. This is not the same. PHP is not merely awkward to use, or ill-suited for what I want, or suboptimal, or...

   PHP,Design,Analysis     2012-04-11 13:46:57

  Python object creation sequence

[The Python version described in this article is 3.x] This article aims to explore the process of creating new objects in Python. As I explained in a previous article, object creation is just a special case of calling a callable. Consider this Python code: class Joe: pass j = Joe() What happens when j = Joe() is executed? Python sees it as a call to the callable Joe, and routes it to the internal function PyObject_Call, with Joe passed as the first argument. PyObject_Call looks at the ty...

   Python,Object creation     2012-04-16 15:03:55

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