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We will also look at how tools can improve software phases,

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the software activities, and can support software development tasks in general.

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And this is something that I will repeat over and over

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in the class, tools and automation are fundamental, in software engineering.

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And they're fundamental for improving productivity, not only efficiency but also

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effectiveness of our activities in the software development process. So let

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me go back to one of the diagrams that I showed

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you before. If you remember we had this qualititive diagram in which

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we were showing that one of the issues that led to the

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software crisis was the fact that developers' productivity was not able to

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keep up with the software size and complexity, with the growth in

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the importance and the complexity of software. What tools can help us

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to do is to change this and basically move this curve from

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this original position up here. So that it gets closer and closer

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to what we need to develop the software that we need to

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build. So let me discuss examples on how tools can improve productivity.

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For example, if we are talking about development, think about

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what kind of improvement it was to go from punch

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cards to modern IDEs. If we're talking about languages, think

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about of how much more productive developers became when going from

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writing machine code to writing code in high-level languages. And

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finally, if we talk about debugging, which is a very important

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and expensive activity, moving from the use of print lines

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to the use of symbolic debuggers dramatically improve the effectiveness and

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efficiency of development. And these are just some of the

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tools that we will discuss in the rest of the class

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and notice that we will also use the tools in practice.

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So we will use the tools before projects and also during

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the lessons and for assignments. In particular, we will use

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three main kinds of tools. The first type is IDE's. And

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I'm pretty sure you're familiar with IDE's. These are integrated development

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environments. So, advanced editors in which you can write, compile, run,

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and debug and even test your code. We'll also use a

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version control system, systems that allow you to save, and restore, and

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check the differences between different versions of the code, in particular

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we will be working with git. We will also be looking at

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other kinds of tools like coverage and verification tools. These are

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tools that can help you during testing and I'm a big fan

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of these tools, so I'm really going to stress the usefulness

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of these tools and how you should use them in your development.