Google Plugin for Eclipse OutOfMemoryError

There is some kind of memory leak in the Google Plugin for Eclipse.  I always use GWT and GAE so not sure what the culprit is but adding this to the launch configuration "VM Arguments" helps:

-XX:MaxPermSize=512m

Eclipse not prompting to choose workspace

I upgraded to Juno (Eclipse 4.2) and every time I would re-start, the default workspace was opened even though I set it to work from a different location.

I had checked "prompt for workspace on startup" but it had no effect.

The solution was to run eclipse -clean from the command line.  Open the Terminal app and navigate inside the eclipse package contents to where the actual executable is:

cd Eclipse.app/Contents/MacOS/

./eclipse -clean 

 That sorted it!

Completely delete pending messages from Skype on Mac OSX

When you send messages on Skype they are only delivered when you are both connected to the Skype network.  If you send a message while either you or your friend is offline you see that it is pending and will be delivered next time you both connect.  

If you send a message and then change your mind you can right click on the message and choose to remove it.  You friend will be sent a notification that you removed a message which is a bit annoying because then they will wonder what you are hiding!

To delete messages permanently and without the notification you need to hack Skype's database which uses Sqlite:

First shut down Skype because it locks the database.

in Terminal

> sqlite3 Library/Application\ Support/Skype/YOUR_USER_NAME/main.db

sqlite> select * from messages

Now find the id of the start of your conversation.  The id is the first column in the results.

sqlite> delete from messages where id > 2904;

This will delete all messages after your conversation.  If you want to be more specific then you may be able to delete individual messages.

Eclipse on Mac - Delete key not working

On a Mac laptop the delete key is a backwards delete, not a forwards delete, and so it does not work out-of-the-box with Eclipse.  To fix this just go to Preferences > General > Keys and find Delete.  Remove the binding and then select the delete key again from the drop down to the right.  That should do it!