How to Design Programs Languages

1`` | Beginning Student
2`` | Beginning Student with List Abbreviations
3`` | Intermediate Student
4`` | Intermediate Student with Lambda
5`` | Advanced Student
| Index

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Version: 4.0.2
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#### 1.12`` Symbols

’id

(quote id)

A quoted id is a symbol. A symbol is a constant, like 0 and empty.

Normally, a symbol is written with a ', like 'apple, but it can also be written with quote, like (quote apple).

The id for a symbol is a sequence of characters not including a space or one of the following:

" , ' ` ( ) [ ] { } | ; #

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