Lifeboat blog

When O(N) is better than O(log N)?

We are used to think that O(log N) is always better than O(N), but it is not always true.

SVN stash on bash

SVN does not have a stash (or shelve) functionality, but there is always a way around

Setting up Webex on Ubuntu

It is not trivial to set up Webex to work on modern Ubuntu. This post recaps the steps I made to make it work

Parsing address string in PostgreSQL

Sample query to parse address line into fields in PostgreSQL without stored procedures

Extracting OLE documents from Microsoft Office format

If you ever need to extract an OLE document from within a Microsoft Office document

Custom insert-or-update conditions with Squeryl

Squeryl is very smart, but some time you want to alter a bit of its logic. Here is one of the methods.

How to resolve conflicting methods error in Scala

The error "class XXX inherits conflicting members" is almost obvious by the compiler message, but stop just one step short of the full solution.

Type-aware generics in Scala

It is possible to create a generic class, that would have parts of it aware of the actual class of its type argument. Without reflection and linked in compile time. Here is how.