An array can be a general array, meaning each element may be any object, or it may be a specialized array, meaning that each element must be of a restricted type.
The phrasing "an array specialized to type <<type>>" is sometimes used to emphasize the element type of an array. This phrasing is tolerated even when the <<type>> is t, even though an array specialized to type t is a general array, not a specialized array.
Figure 15--1 lists some defined names that are applicable to array creation, access, and information operations.
adjust-array array-in-bounds-p svref adjustable-array-p array-rank upgraded-array-element-type aref array-rank-limit upgraded-complex-part-type array-dimension array-row-major-index vector array-dimension-limit array-total-size vector-pop array-dimensions array-total-size-limit vector-push array-element-type fill-pointer vector-push-extend array-has-fill-pointer-p make-array
Figure 15--1: General Purpose Array-Related Defined Names
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