Working with Ruby
Ruby 1.8 dies in June 2012. This post shows some small examples, why this is good ;)
Hi, I am Jan. This is my old Ruby blog. I still post about Ruby, but I now do it on idiosyncratic-ruby.com. You should also install Irbtools to improve your IRB.
New features of Ruby Zucker version 2 and 3
The Zucker gem has gotten some new features. Installation is as easy as
gem install zucker
and
require 'zucker/all'
Introducing Ruby Zucker - a new syntactical sugar gem
Zucker is a collection of lightweight scripts (cubes) that make Ruby even more beautiful: rubyzucker.info
RubyBuntu -2- Troubleshooting common Ruby ubuntu problems
A common Ruby experience on ubuntu: You get some stupid error, saying something would be missing – and you don’t know what to do…
RubyBuntu -1- Installing Ruby (and Rails) on ubuntu
Installing Ruby/Rails on ubuntu is not hard, but some little obstacles might be confusing.
Project Euler 1-5 (Ruby)
projecteuler.net tries to get you thinking about how to solve mathematical problems by programming. Here are the first five problems, solved in Ruby, including comments.
Oh, this sweet and tasty syntactic sugar!
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.
Ruby Brainfuck golf [Update]
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 :)
Brainfuck
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.
Converting decimal to binary integers: custom methods vs. to_i [Update]
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]
