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Diffstat (limited to 'doc')
| -rw-r--r-- | doc/lispref/sequences.texi | 27 |
1 files changed, 27 insertions, 0 deletions
diff --git a/doc/lispref/sequences.texi b/doc/lispref/sequences.texi index b48fae4741f..e58f0390a45 100644 --- a/doc/lispref/sequences.texi +++ b/doc/lispref/sequences.texi @@ -797,6 +797,33 @@ vector or string (@pxref{Iteration} for more information about the @code{dolist} macro). This is primarily useful for side-effects. @end defmac +@defmac seq-let arguments sequense body@dots{} +@cindex sequence destructuring + This macro binds the variables in defined in the sequence +@var{arguments} to the elements of the sequence @var{sequence}. +@var{arguments} can itself include sequences allowing for nested +destructuring. + +@example +@group +(seq-let [first second] [1 2 3 4] + (list first second)) +@result{} (1 2) +@end group +@group +(seq-let (_ a _ b) '(1 2 3 4) + (list a b)) +@result{} (2 4) +@end group +@group +(seq-let [a [b [c]]] [1 [2 [3]]] + (list a b c)) +@result{} (1 2 3) +@end group +@end example +@end defmac + + @node Arrays @section Arrays @cindex array |