Smalltalk Hints and Tips
| 1. Starting Smalltalk, and Terminology | 2. Precedence Rules | 3. Classes - Strings | 4. Class Browser | 5. Variables | 6. Error Messages | 12. Control Structures | 16. Dialogs | 23. Collection class | 39. OpenGUI |
| Smalltalk Books | Student Software & Books | Hints & Tips | Sites | Download Smalltalk | Coloured code | Download Documents | ASCII Codes |
When programming Smalltalk, Error messages will soon be received. To a beginner these messages are confusing and unintelligible
Tip 1. Make a list of Error MessagesYour list should include:
Tip 2. Make a personal list of methodsSince writing this I have greatly improved the Master Index with an index of methods section. This list does not include the information below but does include references of where to find information.
Your list should include:
Tip 3. Make an early start at using the conferences
If you are new to the Open University, using your OU FirstClass Guide enter the practice conference, send and retrieve messages. Ask for help via the conference if required. When you gain confidence go to the specific M206 conferences.
Make a mistake in programming and you can crash your computer, and loose a lot of your work. It could sometime mean reinstalling windows, with a loss of nearly everything.
Tip 8. If you get the dreaded GC flashing cursor. Use the Ctrl q key combination. Do not use Ctrl Alt Delete combination
Tip 9a. If you have opened LearningWorks. Do NOT open it again. This is easy to do if you have a minimised copy on the task bar.
Tip 9b. If you accidentally open more than one LW (tip 9a), and you have trouble closing a copy, try closing the other copy first. They have to be closed in the correct order.
Tip . The tips on saving your work are particularly important before writing code for an initialize class method.
Use the debugger. The problem usually in a faulty class inialize method. See LearningBook will not open.
It is very easy to search through the LearningBook practicals / discussions for a particular word or phrase.
The default folder for these files is C:\M206\Lw\Html
You can open Windows explorer
Click on the above Html folder
Use Tools Find Files or Folders
Or from Windows desktop
Click Start Find Files or Folders.
In the Find Dialog window
The example, isVowel should find 5 files containing isVowel. Double click on one of them to bring up the file. Repeat this as required.
If the file is big find in the Edit menu (or Ctrl F) can be used to locate the position within the file of isVowel. The F3 key will search for the next location.
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