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Macros

Introduction

Scheme macros are transformations on the source of a scheme program which happen at "compile" time. They allow you to introduce

• New binding constructs (i.e. with-slots, a macro which allows you to access the slots of an object within its body by name instead of writing (slot-ref obj 'slot))

• New control constructs (i.e. the eager comprehensions of SRFI-42).

• New "little-languages" (i.e. the make-like language found in PLT's (lib "make.ss" "make") collection).

The following recipes demonstrate some uses of macros. For an introduction to the writing of macros, please also see GettingStartedMacros; some additional macros can be found in IdiomChapter.

Recipes

• Creating a New SRFI-42 Generator (Recipe)
• Using syntax/loc instead of =syntax= (Recipe)

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