(apply 'append sets)))))))
(or (cdr endtest) '(nil)))))
-(defmacro dolist (spec &rest body)
- "(dolist (VAR LIST [RESULT]) BODY...): loop over a list.
-Evaluate BODY with VAR bound to each `car' from LIST, in turn.
-Then evaluate RESULT to get return value, default nil."
- (let ((temp (gensym "--dolist-temp--")))
- (list 'block nil
- (list* 'let (list (list temp (nth 1 spec)) (car spec))
- (list* 'while temp (list 'setq (car spec) (list 'car temp))
- (append body (list (list 'setq temp
- (list 'cdr temp)))))
- (if (cdr (cdr spec))
- (cons (list 'setq (car spec) nil) (cdr (cdr spec)))
- '(nil))))))
-
-(defmacro dotimes (spec &rest body)
- "(dotimes (VAR COUNT [RESULT]) BODY...): loop a certain number of times.
-Evaluate BODY with VAR bound to successive integers from 0, inclusive,
-to COUNT, exclusive. Then evaluate RESULT to get return value, default
-nil."
- (let ((temp (gensym "--dotimes-temp--")))
- (list 'block nil
- (list* 'let (list (list temp (nth 1 spec)) (list (car spec) 0))
- (list* 'while (list '< (car spec) temp)
- (append body (list (list 'incf (car spec)))))
- (or (cdr (cdr spec)) '(nil))))))
-
(defmacro do-symbols (spec &rest body)
"(dosymbols (VAR [OBARRAY [RESULT]]) BODY...): loop over all symbols.
Evaluate BODY with VAR bound to each interned symbol, or to each symbol
* Variable Bindings:: `progv', `lexical-let', `flet', `macrolet'
* Conditionals:: `case', `typecase'
* Blocks and Exits:: `block', `return', `return-from'
-* Iteration:: `do', `dotimes', `dolist', `do-symbols'
+* Iteration:: `do', `do-symbols'
* Loop Facility:: The Common Lisp `loop' macro
* Multiple Values:: `values', `multiple-value-bind', etc.
@end menu
@noindent
In this example, the @code{my-dolist} macro is similar to @code{dolist}
-(@pxref{Iteration}) except that the variable @code{x} becomes a true
+except that the variable @code{x} becomes a true
reference onto the elements of the list. The @code{my-dolist} call
shown here expands to
forms which do create the implicit block.
The Common Lisp looping constructs defined by this package,
-such as @code{loop} and @code{dolist}, also create implicit blocks
+such as @code{loop}, also create implicit blocks
just as in Common Lisp.
Because they are implemented in terms of Emacs Lisp @code{catch}
@defspec return [result]
This macro is exactly like @code{(return-from nil @var{result})}.
-Common Lisp loops like @code{do} and @code{dolist} implicitly enclose
+Common Lisp loops like @code{do} implicitly enclose
themselves in @code{nil} blocks.
@end defspec
@end example
@end defspec
-@defspec dolist (var list [result]) forms@dots{}
-This is a more specialized loop which iterates across the elements
-of a list. @var{list} should evaluate to a list; the body @var{forms}
-are executed with @var{var} bound to each element of the list in
-turn. Finally, the @var{result} form (or @code{nil}) is evaluated
-with @var{var} bound to @code{nil} to produce the result returned by
-the loop. The loop is surrounded by an implicit @code{nil} block.
-@end defspec
-
-@defspec dotimes (var count [result]) forms@dots{}
-This is a more specialized loop which iterates a specified number
-of times. The body is executed with @var{var} bound to the integers
-from zero (inclusive) to @var{count} (exclusive), in turn. Then
-the @code{result} form is evaluated with @var{var} bound to the total
-number of iterations that were done (i.e., @code{(max 0 @var{count})})
-to get the return value for the loop form. The loop is surrounded
-by an implicit @code{nil} block.
-@end defspec
-
@defspec do-symbols (var [obarray [result]]) forms@dots{}
This loop iterates over all interned symbols. If @var{obarray}
is specified and is not @code{nil}, it loops over all symbols in