This chapter introduces you to one of the most powerful tools to structure a program: The function. Functions allow us to reuse a sequence of commands to avoid having to write them down multiple times. Functions can also be customized by providing them parameters that change their behaviour on every call.
There is no better time than today to become a programmer. The demand on the job market is rising continously. And it has never been easier. There are countless books about all kinds of programming languages and interactive online courses. But mastering a programming language is not enough to become a professional software developer. You need to learn many other skills, too. I taught myself these skills. And you can do it, too. Based on my experience, I give an overview about everything you need to learn in order to get you started on the path of becoming a professional developer.
The latest hype in the car industry is the autonomous car. It seems like the dream of a vehicle that can drive on its own is within our grasp and that is is only a matter of a few years until we can buy one. This will free us of driving ourselves and will enable driverless taxis, make private cars superfluous and replace all local transport. At least this is what we can read these days in the newspapers. But is it true? This article tries to examine what impact the introduction of self-driving vehicles might have on our streets, our cities and our lives.
Whenever a celebrity or a person of public interest dies in an accident, it gets a lot of attention in the media. Whenever I recollect all the accidents of VIPs I can remember, I think I can see a pattern. The vast majority of them died in car accidents, like James Dean, Lady Di, Falco or Grace Kelly. Some others died in plane crashes, like Buddy Holly or Juri Gagarin. But I can’t remember any VIP who died in a train crash or in a sinking ship. Does this perceived pattern match with official statistics, and does it suggest anything to increase the survival rate of celebrities – and normal people, too?
If we ever want to colonize the moon or other planets like Mars, we will need to transport huge amounts of material and many colonists to space. Doing this with rockets is costly, inefficient and also dangerous. What if we could lift material and people into space just like an elevator? This is the concept of the Space Elevator. This article summarizes the concept of the Space Elevator and examines what would happen if we really built one.