See Paul Graham’s article on lisp : Revenge of the Nerds
Category Archives: Uncategorized
Undo a pushed commit in mercurial.
Friday, June 25, 2010
You have committed to your local repository, and pushed to the remote repo. Now you want to undo that commit (a bit similar to a subversion revert). Do
hg backout -m ‘back out change’ tip
See this for more details :
http://hgbook.red-bean.com/read/finding-and-fixing-mistakes.html
A Cool Java Map builder
Tuesday, September 22, 2009
Build up java maps as literals with this builder
Optimizing intellij idea performance
Monday, September 14, 2009
See 10 Tips to Increase IntelliJ IDEA Performance
VIM rails plugin - switching buffers
Thursday, April 30, 2009
Using the VIM rails plugin, and want to switch between the last 2 buffers in VIM? Its Ctrl + 6. Found this in this pdf by Reza Jelveh on Rails development in Vim.
Vim project plugin : Switching between the buffer and the project pane
Tuesday, April 28, 2009
Ctrl+W twice switches between the project pane and the file editing buffer when using the VIM project plugin . Found this after lots of Google searching from Ariyas blog post about using the project plugin.
Setting SVN ignore on a directory recursively
Monday, April 27, 2009
Example: SVN ignore all the .swp files in the current directory and all sub-directories:
svn propset -R svn:ignore ‘*.swp’ .
Installing Oracle XE on Ubuntu
Thursday, November 13, 2008
Here are a few helpful articles
http://www.markcarter.me.uk/computing/linux/oracle.htm
http://www.oracle.com/technology/tech/linux/install/xe-on-kubuntu.html
I installed Oracle XE on a Virtual Machine. I did come up with 2 issues -
1. The VM had 512Mb of RAM and oracle needed more. Had to increase the swap space. This page gives instructions on doing this on ubuntu.
2. The VM was on an internal network, and [...]
Changing the default gVim/MacVim color scheme
Tuesday, October 21, 2008
To change the default color scheme to say koehler (making it look a bit like textmate), add the following to your .vimrc file
:colorscheme koehler
Save and restart your MacVim / gVim. And that should be it.
(You can easily access the .vimrc file by going to Edit>Startup settings from your menu)
Parsing CSV files with ruby FasterCSV : An example
Monday, October 13, 2008
Need to parse csv files in ruby, skipping the first row (usually some header)?. Use FasterCSV. (Yes, its faster). Install it
$ sudo gem install fastercsv
Here is one solution
#!/usr/bin/ruby -w
require ‘rubygems’
require ‘faster_csv’
#put everything in an array
array_of_arrays = FasterCSV.read(”some_file.csv”)
# remove headers
array_of_arrays.slice!(0)
array_of_arrays.each{|row|
puts row
}
Another solution is
#!/usr/bin/ruby -w
require ‘rubygems’
require ‘faster_csv’
# setting the headers option [...]
