The Zucker gem has gotten some new features. Installation is as easy as
gem install zucker
require 'zucker/all' […]
A common Ruby experience on ubuntu: You get some stupid error, saying something would be missing – and you don’t know what to do… […]
Installing Ruby/Rails on ubuntu is not hard, but some little obstacles might be confusing. […]
This article is written for people with experience in programming in general, but who are new to Ruby.
A German version is published in the offline magazine #2, a magazine by some students of TU Dresden.
The intention is to demonstrate some features of Ruby and show, what is so great about Ruby:
A clean syntax combined with the possibility to adapt the language to given requirements flexibly. […]
Some days ago, I discovered a website – which is the most addicting one I know :) – codegolf.com. The goal is, to solve programming problems with as short code as possible.
As I said, it is addicting. You do not write better ruby code by golfing. But you can really improve the knowledge of the language. And it is fun :)
After doing some of the other challenges I tried the brainfuck challenge.
Brainfuck is a Turing-complete esoteric programming language consisting only of 8 letters, operating on a 30000 cells-array. This is the hello world program:
>+++++++++[<++++++++>-]<.>+++++++[<++++>-]<+.+++++++..+++.[-]>++++++++[<++++>-] <.>+++++++++++[<++++++++>-]<-.--------.+++.------.--------.[-]>++++++++[<++++>- ]<+.[-]++++++++++.
The goal is to build a interpreter. […]
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:
- using built-in to_i-magic
- calculating it by hand
- using sprintf
It stops the time each method needs to get the fastest. The result might be surprising. [Update: improved the custom methods] […]