elisp: Vector Type
2.3.9 Vector Type
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A “vector” is a one-dimensional array of elements of any type. It takes
a constant amount of time to access any element of a vector. (In a
list, the access time of an element is proportional to the distance of
the element from the beginning of the list.)
The printed representation of a vector consists of a left square
bracket, the elements, and a right square bracket. This is also the
read syntax. Like numbers and strings, vectors are considered constants
for evaluation.
[1 "two" (three)] ; A vector of three elements.
⇒ [1 "two" (three)]
Vectors, for functions that work with vectors.