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  ANSI Common Lisp   15 Arrays   15.2 Dictionary of Arrays

15.2.3 vector System Class

Class Precedence List:
vector, array, sequence, t

Any one-dimensional array is a vector.

The type vector is a subtype of type array; for all types x, (vector x) is the same as (array x (*)).

The type (vector t), the type string, and the type bit-vector are disjoint subtypes of type vector.

Compound Type Specifier Kind:

Compound Type Specifier Syntax:
(vector [{element-type | *} [{size | *}]])

Compound Type Specifier Arguments:
size - a non-negative fixnum.

element-type - a type specifier.

Compound Type Specifier Description:
This denotes the set of specialized vectors whose element type and dimension match the specified values. Specifically:

If element-type is the symbol *, vectors are not excluded on the basis of their element type. Otherwise, only those vectors are included whose actual array element type is the result of upgrading element-type; see Section Array Upgrading.

If a size is specified, the set includes only those vectors whose only dimension is size. If the symbol * is specified instead of a size, the set is not restricted on the basis of dimension.

See Also:
Section Required Kinds of Specialized Arrays, Section Sharpsign Left-Parenthesis, Section Printing Other Vectors, Section Sharpsign A

The type (vector e s) is equivalent to the type (array e (s)).

The type (vector bit) has the name bit-vector.

The union of all types (vector C), where C is any subtype of character, has the name string.

(vector *) refers to all vectors regardless of element type, (vector type-specifier) refers only to those vectors that can result from giving type-specifier as the :element-type argument to make-array.

Allegro CL Implementation Details:

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