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| public:t-622-arti-09-1:lab_1_materials [2009/01/19 14:48] – hannes | public:t-622-arti-09-1:lab_1_materials [2024/04/29 13:33] (current) – external edit 127.0.0.1 |
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| === Lab 1 material: Lisp === | === Lab 1 material: Introduction to Lisp === |
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| * [[http://cs.gmu.edu/~sean/lisp/LispTutorial.html|Lisp Tutorial]] | * [[http://cs.gmu.edu/~sean/lisp/LispTutorial.html|Lisp Tutorial]] |
| * [[http://www.gigamonkeys.com/book/lispbox/|LispBox - easy one-install Lisp implementations]] | * [[http://www.gigamonkeys.com/book/lispbox/|LispBox - easy one-install Lisp implementations]], Locally:[[http://www.ru.is/faculty/hannes/share/lispbox07.exe|lispbox07.exe]] [[http://www.ru.is/faculty/hannes/share/Lispbox-0.7-with-acl81_express.dmg|Lispbox-0.7-with-acl81_express.dmg (OS X 10.4 PPC)]] |
| * [[http://www.apl.jhu.edu/~hall/Lisp-Notes/Introductory-Lisp-Overview.ps|Lisp cheat sheet (PS)]] {{:public:t-622-arti-09-1:introductory-lisp-overview.pdf|(PDF)}} | * [[http://www.apl.jhu.edu/~hall/Lisp-Notes/Introductory-Lisp-Overview.ps|Lisp cheat sheet (PS)]] {{:public:t-622-arti-09-1:introductory-lisp-overview.pdf|(PDF)}} |
| * More material for learning Lisp: | * More material for learning Lisp: |
| * [[http://refcards.com/docs/wingb/xemacs/xemacs-refcard-a4.pdf|Emacs reference card (PDF)]] | * [[http://refcards.com/docs/wingb/xemacs/xemacs-refcard-a4.pdf|Emacs reference card (PDF)]] |
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| Work through the following exercises. Refer to the above material for more information. | To work through these exercises, refer to the above material for more information. |
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| - **Emacs and REPL:**\\ Install [[http://www.gigamonkeys.com/book/lispbox/|LispBox]] on your computer and start it up. The lower window is the Lisp REPL (read-eval-print loop) where you can enter Lisp expressions and have them evaluated. | - **Emacs and REPL:**\\ Install [[http://www.gigamonkeys.com/book/lispbox/|LispBox]] on your computer and start it up. The lower window is the Lisp REPL (read-eval-print loop) where you can enter Lisp expressions and have them evaluated. |
| * In the REPL, type '','' (comma); this invokes the command mode of the REPL, type the command ''cd'' and press enter. Emacs will prompt you for a file path, enter the file path to the folder where you saved the file. | * In the REPL, type '','' (comma); this invokes the command mode of the REPL, type the command ''cd'' and press enter. Emacs will prompt you for a file path, enter the file path to the folder where you saved the file. |
| * Now type (in the REPL) the expression ''(load "agents.lisp")''. | * Now type (in the REPL) the expression ''(load "agents.lisp")''. |
| * Now the definitions of the file have been loaded in the REPL. To see what definitions are available, open the file in the upper half of Emacs. To do this, you can click in the upper half and then press (in sequence) Cmd+C and Cmd+F and type the path to the file. Alternatively just select "File -> Open" :-) If Emacs asks you to allow it to apply local variables from the file, then answer with Yes. | * Now the definitions of the file have been loaded in the REPL. To see what definitions are available, open the file in the upper half of Emacs. To do this, you can click in the upper half and then press (in sequence) Ctrl+X and Ctrl+F and type the path to the file. Alternatively just select "File -> Open" :-) If Emacs asks you to allow it to apply local variables from the file, then answer with Yes. |
| * Have a look at the file and see if you can understand the code. Don't worry too much if you don't. At the bottom of the file there are three example expressions. Try typing (in order) them in the REPL and see what happens | * Have a look at the file and see if you can understand the code. Don't worry too much if you don't. At the bottom of the file there are three example expressions. Try typing (in order) them in the REPL and see what happens |
| - **Writing an agent program:** \\ The function ''EXAMPLE-AGENT-PROGRAM'' gives an example of how to create a program to control an agent in the vacuum-cleaner world. The program is a function that takes a keyword list representing the percept value, and it should return one of the symbols ''LEFT, RIGHT, UP, DOWN, SUCK'' or ''IDLE''. A percept keyword list looks like this: <code lisp> | - **Writing an agent program:** \\ The function ''EXAMPLE-AGENT-PROGRAM'' gives an example of how to create a program to control an agent in the vacuum-cleaner world. The program is a function that takes a keyword list representing the percept value, and it should return one of the symbols ''LEFT, RIGHT, UP, DOWN, SUCK'' or ''IDLE''. A percept keyword list looks like this: <code lisp> |
