make-sequence result-type size &key initial-element => sequence
Arguments and Values:
result-type---a sequence type specifier.
size---a non-negative integer.
initial-element---an object. The default is implementation-dependent.
sequence---a proper sequence.
Returns a sequence of the type result-type and of length size, each of the elements of which has been initialized to initial-element.
If the result-type is a subtype of list, the result will be a list.
If the result-type is a subtype of vector, then if the implementation can determine the element type specified for the result-type, the element type of the resulting array is the result of upgrading that element type; or, if the implementation can determine that the element type is unspecified (or *), the element type of the resulting array is t; otherwise, an error is signaled.
(make-sequence 'list 0) => () (make-sequence 'string 26 :initial-element #\.) => ".........................." (make-sequence '(vector double-float) 2 :initial-element 1d0) => #(1.0d0 1.0d0)
(make-sequence '(vector * 2) 3) should signal an error (make-sequence '(vector * 4) 3) should signal an error
The consequences are unspecified if initial-element is not an object which can be stored in the resulting sequence.
An error of type type-error must be signaled if the result-type is neither a recognizable subtype of list, nor a recognizable subtype of vector.
An error of type type-error should be signaled if result-type specifies the number of elements and size is different from that number.
(make-sequence 'string 5) == (make-string 5)