4.18 Void

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2 | Notation for Documentation
3 | Syntactic Forms
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▼ | 4 | Datatypes

4.1 | Booleans and Equality
4.2 | Numbers
4.3 | Strings
4.4 | Byte Strings
4.5 | Characters
4.6 | Symbols
4.7 | Regular Expressions
4.8 | Keywords
4.9 | Pairs and Lists
4.10 | Mutable Pairs and Lists
4.11 | Vectors
4.12 | Boxes
4.13 | Hash Tables
4.14 | Sequences and Streams
4.15 | Dictionaries
4.16 | Sets
4.17 | Procedures
4.18 | Void
4.19 | Undefined

On this page:

void?
void

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#### 4.18`` Void

The constant #<void> is returned by most forms and procedures that have a side-effect and no useful result.

The #<void> value is always eq? to itself.

> procedure (void? v) → boolean?
> v : any/c

Returns #t if v is the constant #<void>, #f otherwise.

> procedure (void v ...) → void?
> v : any/c

Returns the constant #<void>. Each v argument is ignored.
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