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ANSI Common Lisp  15 Arrays 15.2 Dictionary of Arrays
- Supertypes:
-
simple-array,
array,
t
- Description:
-
The type of an array that is not displaced
to another array, has no fill pointer, and is
not
expressly adjustable is a subtype of type simple-array.
The concept of a simple array
exists to allow the implementation to use a specialized representation
and to allow the user to declare that certain values will always be
simple arrays.
The types simple-vector,
simple-string,
and simple-bit-vector
are disjoint subtypes of type simple-array,
for they respectively mean (simple-array t (*)),
the union of all (simple-array c (*))
for any c being a subtype of type character,
and (simple-array bit (*)).
- Compound Type Specifier Kind:
-
Specializing.
- Compound Type Specifier Syntax:
-
(simple-array [{element-type | *} [dimension-spec]])
dimension-spec::= rank | * | ({dimension | *}*)
- Compound Type Specifier Arguments:
-
dimension - a valid array dimension.
element-type - a type specifier.
rank - a non-negative fixnum.
- Compound Type Specifier Description:
-
This compound type specifier is treated exactly as the corresponding
compound type specifier for type array would be treated,
except that the set is further constrained to include only simple arrays.
- Notes:
-
It is implementation-dependent
whether displaced arrays,
vectors with fill pointers,
or arrays that are actually adjustable
are simple arrays.
(simple-array *) refers to all simple arrays
regardless of element type, (simple-array type-specifier)
refers only to those simple arrays
that can result from giving type-specifier as the
:element-type argument to make-array.
- Allegro CL Implementation Details:
-
None.
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