An overview of Scheme constructs

Linguistic abstraction - slide 20 : 22

What is the basic classification of constructs in Scheme?

Syntax
- Fundamental syntactical constructs such as lambda , define , and if
Primitive functions and procedures
- Fundamental functions and procedures, which cannot in a reasonable way be implemented in the language
Library Syntax
- Syntactical extensions which can be implemented by macros
Library functions and procedures
- Functions and procedures which can be implemented on the ground of more primitive features

Parenthesized prefix notation is used as a common notation for all kinds of constructs

This provides for an uniform notation across the different kinds of constructs in the language