samer@0: % typecode - Return basic typing information about a value
samer@0: %
samer@0: % typecode :: A -> natural ~'number of elements', bool ~'is numeric', bool ~'is char'.
samer@0: function [n,isnum,isch]=typecodes(X)
samer@0: 
samer@0: n=numel(X);
samer@0: isnum=isnumeric(X);
samer@0: isch=ischar(X);
samer@0: %tp=class(X);