Syntax:
copy-seq sequence => copied-sequence
Arguments and Values:
sequence---a proper sequence.
copied-sequence---a proper sequence.
Description:
Creates a copy of sequence. The elements of the new sequence are the same as the corresponding elements of the given sequence.
If sequence is a vector, the result is a fresh simple array of rank one that has the same actual array element type as sequence. If sequence is a list, the result is a fresh list.
Examples:
(setq str "a string") => "a string" (equalp str (copy-seq str)) => true (eql str (copy-seq str)) => false
Side Effects: None.
Affected By: None.
Exceptional Situations:
Should be prepared to signal an error of type type-error if sequence is not a proper sequence.
See Also:
Notes:
From a functional standpoint,
(copy-seq x) == (subseq x 0)However, the programmer intent is typically very different in these two cases.
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