On 2/17/25 17:22, John Cowan wrote:
> This argument proves too much.

OK, I'll remove this item from my list of proposed changes.

Arthur just committed some changes I made to eliminate (I hope) all
unnecessary mutations in the library code and to copy modifiable
procedure arguments (lists and vectors) before calling user-defined
storage class procedures.  These changes remove some types of possible
internal library crashes.

Brad

Things to change in a future library:

1.  (srfi 231) is "safe", with an "unsafe" library (srfi 231 unsafe);
mixing safe and unsafe arrays and operations could be accomplished by
renaming routines.

2.  Get rid of array-freeze!

3.  Do not fix the order of evaluation of array elements in arguments to
the "bang" (!) procedures.

4.  Add (array-rebase array [lower-bounds]) to translate an array to
given lower bounds.

5.  Add broadcasting of arrays and adding new axes to arrays.

6.  Add a notation for quickly specifying Bawden-style array
transformations similar to that of NumPy or Racket's math/array.