[Matrix-SIG] array_map?

[Zaur Nart]

Using Numeric very often I need function like map which return array as result
(not list).

Now I must to write something like:

def array_map(func, A):
    shape = A.shape
    return reshape( array(map(func, reshape(A, (-1,)))), shape )

or use <for>. But this is a slow way :-(
Note: func is not builtin or trivial (simple).

It will be very nice to modify function map or write clone (in C or C++),
for example <array_map>
     array_map( func, array1, array2, ..., arrayn ),
which 
- detect the shape S of arrays 
  (let suppose, that arrays have the same shape);
- create array of shape S for result;
- organize the internal loop to apply user function to elements
of input arrays and put the value in result array.

Supposed, that we have user function:
     def func( a1, a2, ..., an ):
         .................

Zaur




 

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