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https://github.com/Mercury-Language/mercury.git
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d302810ecf
library/list.m:
Add a predicate version of map_corresponding3.
Move a predicate next to its only call site.
Use more meaningful variable names.
library/map.m:
library/tree234.m:
Add several predicates: foldl4_values, foldl5_values, filter_map_values
and filter_map_values_only.
library/multi_map.m:
Embed an implicit assertion in a call.
library/set_ordlist.m:
Give a predicate a better name.
library/NEWS:
Announce the new additions.
Put the list of updated library modules back into alphabetical order.
tests/hard_coded/test_map_filter.{m,exp}:
Test the one wholly new utility predicate.
69 lines
2.1 KiB
Mathematica
69 lines
2.1 KiB
Mathematica
%---------------------------------------------------------------------------%
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% vim: ts=4 sw=4 et ft=mercury
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%---------------------------------------------------------------------------%
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% Basic test of some bag predicates.
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%---------------------------------------------------------------------------%
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:- module bag_various.
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:- interface.
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:- import_module io.
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:- pred main(io::di, io::uo) is cc_multi.
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:- implementation.
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:- import_module bag.
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:- import_module bool.
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:- import_module int.
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:- import_module list.
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:- import_module solutions.
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:- import_module string.
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main(!IO) :-
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Bag = bag.from_list([1, 1, 1, 2, 3, 3, 4]),
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dump("bag.to_list: ", []++bag.to_list(Bag), !IO),
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dump("bag.to_assoc_list: ", []++bag.to_assoc_list(Bag), !IO),
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dump("bag.count: ", 0+bag.count(Bag), !IO),
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dump("bag.count_unique: ", 0+bag.count_unique(Bag), !IO),
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( if bag.member(4, Bag) then
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dump("bag.member(4): ", yes, !IO)
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else
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dump("bag.member(4): ", no, !IO)
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),
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( if bag.member(5, Bag) then
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dump("bag.member(5): ", yes, !IO)
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else
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dump("bag.member(5): ", no, !IO)
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),
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unsorted_solutions(bag_member_test(Bag), Sols),
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dump("unsorted_solutions(bag.member/3): ", Sols, !IO),
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test_insert_duplicates(5, bag.init, !IO),
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test_insert_duplicates(0, bag.init, !IO),
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test_insert_duplicates(-1, bag.init, !IO),
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test_insert_duplicates(4, bag.from_list(["foo"]), !IO).
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:- pred bag_member_test(bag(int)::in, {int, list(int)}::out) is nondet.
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bag_member_test(Bag, O) :-
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bag.member(M, Bag, BagMinusM),
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O = {M, bag.to_list(BagMinusM)}.
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:- pred test_insert_duplicates(int::in, bag(string)::in, io::di, io::uo)
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is det.
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test_insert_duplicates(N, Bag0, !IO) :-
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Prefix = "bag.insert_duplicates(" ++ int_to_string(N) ++ ", \"foo\"): ",
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( if bag.insert_duplicates(N, "foo", Bag0, Bag) then
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bag.to_list(Bag, List),
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dump(Prefix, List, !IO)
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else
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dump(Prefix, "fail", !IO)
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).
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:- pred dump(string::in, T::in, io::di, io::uo) is det.
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dump(Msg, T, !IO) :-
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io.write_string(Msg, !IO),
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io.write_line(T, !IO).
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