The changes to cord.m and list.m are to reduce unnecessary differences
between cord.m, list.m, and ra_list.m.
library/ra_list.m:
Add new procedures singleton, is_empty, is_not_empty, is_singleton,
length, list_to_ra_list, map, foldl and foldr.
Make ra_list_to_list operate without unnecessary memory allocations.
library/cord.m:
Add a semidet predicate head as a synonym for get_first.
library/list.m:
Add a semidet predicate is_singleton.
Add semidet predicates head and tail next to their semidet function
versions (which should be deprecated). Document them.
Add det predicates det_head and det_tail next to their det function
versions.
Avoid the overhead of calling a closure used for func-to-pred conversion
once for each list element in the function versions of foldl and foldr.
Fix some other documentation.
NEWS:
Mention the new additions to standard library.
library/term_to_xml.m:
tests/hard_coded/construct_packed.m:
Avoid ambiguities between function and predicate forms.
tests/hard_coded/ra_list_test.{m,exp}:
Add tests of length, list_to_ra_list, map, foldl and foldr.
library/ra_list.m:
As above.
Rename ra_list_lookup to ra_list_search, since it fails if the item
to be accessed does not exist. Add a version, ra_list_lookup, which
aborts in that case.
Add predicates to append two ra_lists, and to convert ra_lists
to just plain lists.
Change the argument order of some predicates to be more
state variable friendly.
Add some documentation.
library/bt_array.m:
Delete the moved code, and update the references to the changed predicates.
library/Mercury.options:
Now that the ra_list predicates have been moved to their own module,
stop giving bt_array.m a free pass on inconsistent predicate order.
library/MODULES_DOC:
library/library.m:
Add ra_list.m as a documented module of the Mercury standard library.
library/array.m:
Delete a predicate that served as a test for an ancient bug fix.
NEWS:
Announce both the new ra_list module, and the deletion of the predicate
from array.m.
tests/hard_coded/array_sort.m:
Don't call the predicate deleted from array.m.
tests/hard_coded/ra_list_test.{m,exp}:
A new test case to test operations on ra_lists.
tests/hard_coded/Mmakefile:
Enable the new test case.
