lambda-set method: treat [struct ...] as place.

* eval.c (eval_init): Change registration of dwim-set to only
one required argument, with the rest variadic.

* lib.c (lambda_set_s): New symbol variable.
(dwim_set): Change to variadic function that takes all
arguments other than the object/sequence being operated on as
struct args *. Rewrite to do a test on the object type first,
handling hashes and structs specially.
(obj_init): Initialize lambda_set_s.

* share/txr/stdlib/place.tl (defplace dwim): Rewritten for
more generic syntax. The only argument required is obj-place;
the other arguments are treated as a variable argument list,
all treated uniformly.  This eliminates the special handling
of the default value for hash lookups.

* args.h (args_count): New inline function.

* txr.1: Updated documentation for dwim operator, which neglects
to mention use over objects thanks to the lambda function.
Documented lambda-set.

1 files changed, 1 insertions, 1 deletions

diff --git a/lib.h b/lib.h
index 30d4bd5c..8bc72fd4 100644
--- a/lib.h
+++ b/lib.h
@@ -962,7 +962,7 @@ val empty(val seq);
 val sub(val seq, val from, val to);
 val ref(val seq, val ind);
 val refset(val seq, val ind, val newval);
-val dwim_set(val seq, val ind_range, val newval);
+val dwim_set(val seq, varg);
 val dwim_del(val seq, val ind_range);
 val butlast(val seq, val idx);
 val replace(val seq, val items, val from, val to);