Welcome to the guided tour of the tutorial!
All the classes in the tutorial are provided with your LibertyEiffel installation, in the
Hello world... To execute the program, go to the
LibertyEiffel/tutorial directory and execute the command:
se c HELLO_WORLD make -o hello
The meaning of the command is
||the front-end tool for the LibertyEiffel compiler|
||the tool invoked by |
||the class of which an object is created (you may also write it in lower-case, or use its filename with the |
||the creation procedure of the |
||generates an executable with the name hello (linux) or hello.exe (windows)|
The command produces an executable, usually
hello.exe depending on the system. After compiling is finished, you can run the executable.
This unavoidable program is in
hello_world.e and lets you grasp the basic concepts of Eiffel. Those concepts are:
- Everything is a class. In Eiffel, outside classes there is no salvation.
- The program starts by creating an object. Here, the method is the
makecreation feature in the class
- Each file is named after the name of the class it contains, in lower-case, with the
- Note the special object
iothat allows you to write text on the standard output. We will see that it also lets you read data.
- For the Eiffel syntax, look here.
- pyramide.e and pyramide2.e
To compile the other samples you must modify the compiler command.
Some important concepts
including iterator and sorting
To go further
... and tuples
Date & time