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ANSI Common Lisp  15 Arrays 15.2 Dictionary of Arrays
| 15.2.13 array-element-type |
Function |
- Syntax:
-
array-element-type
array
 typespec
- Arguments and Values:
-
array - an array.
typespec - a type specifier.
- Description:
-
Returns a type specifier which represents the actual array element type
of the array, which is the set of objects that such an array can hold.
(Because of array upgrading, this type specifier can in
some cases denote a supertype of the expressed array element type
of the array.)
- Examples:
-
(array-element-type (make-array 4)) T
(array-element-type (make-array 12 :element-type '(unsigned-byte 8)))
implementation-dependent
(array-element-type (make-array 12 :element-type '(unsigned-byte 5)))
implementation-dependent
(array-element-type (make-array 5 :element-type '(mod 5)))
could be (mod 5), (mod 8), fixnum, t, or any other
type of which (mod 5) is a subtype.
- Affected By:
-
The implementation.
- Exceptional Situations:
-
Should signal an error of type type-error if its argument is not an array.
- See Also:
-
array,
make-array,
subtypep,
upgraded-array-element-type
- Allegro CL Implementation Details:
-
None.
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