This is my first jruby code (written for the clipboard gem) and I was quite surprised that you only need one-liners ;) […]

At my last entry, a question arose about what is the most efficient way to convert integers between the bases 2 and 10: either using built-in ruby methods (and even do lightweight string-operations) or calculating it manually. I had to find out ;). So I have written a little benchmark program, which does the conversion in three different ways:

1. using built-in to_i-magic
2. calculating it by hand
3. using sprintf

It stops the time each method needs to get the fastest. The result might be surprising. [Update: improved the custom methods] […]