diff general/funutils/@function_handle/and.m @ 39:c388f1c70669

Updated documentation and fixed some bugs in function algebra

--- a/general/funutils/@function_handle/and.m	Tue Jan 29 15:59:01 2013 +0000
+++ b/general/funutils/@function_handle/and.m	Tue Jan 29 17:02:00 2013 +0000
@@ -1,4 +1,4 @@
-% and - function combinator, f&g (...) = f(...); return g(...)
+% and - sequential call function combinator
 %
 % and ::
 %    (A{:} => B{:}),
@@ -6,11 +6,14 @@
 % -> (A{:} => C{:}).
 %
 % and ::
-%    (A{1:N} => B{:}),
-%    (A{1:N} => C{1:M}),
+%    (A{:} => B{:}),
+%    (A{:} => C{:}),
 %    N:natural,
 %    M:natural
 % -> (A{1:N} => C{1:M}).
+%
+% f&g == and(f,g) is a function which first calls f with given arguments,
+% discarding return values, then calls g with arguments returning result.
 function h=and(f,g,nin,nout)
 	if nargin<4, nout=nargout(g); end
 	if nargin<3, nin=nargin(g); end