.gitignore

@@ -1 +0,0 @@
-data.pl

data.pl

@@ -0,0 +1,4 @@
+task("take over a world",todo).
+task("sleep",done).
+task("finish this",todo).
+task("test task",todo).

todo.pl

@@ -1,45 +1,26 @@
 :- dynamic task/2.
 :- dynamic requires/2.
-:- dynamic idx/2.
 :- discontiguous load/0.
     
+task("take over a world", todo).
+task("sleep", done).
+task("finish this", todo).
+
 all_tasks(L):- findall(X, task(X, _), L).
 all_tasks(L, STATE):- findall(X, task(X, STATE), L).
 
+print_task_list([]).
+print_task_list([H|T]) :- task(H,ISDONE), write(ISDONE),write(': '), write(H),nl, print_task_list(T).
 
-print_task_list([],_).
+list :- all_tasks(L), print_task_list(L).
-print_task_list([H|T],N) :- 
-    M is N+1,
-    retractall(idx(N, _)),
-    asserta(idx(N, H)),
-    write(N),
-    write(". "),
-    task(H,ISDONE), 
-    write(ISDONE),
-    write(': '), 
-    write(H),nl, 
-    print_task_list(T, M).
-
-list_all :- all_tasks(L), print_task_list(L,1).
-list_all :- all_tasks(L), print_task_list(L,1).
-list :- all_tasks(L, todo), print_task_list(L,1).
-list_done :- all_tasks(L, done), print_task_list(L,1).
 
 print_list([]).
 print_list([H|T]) :- write(H),nl, print_list(T).
 
-new(X) :- 
+new(X) :- asserta(task(X, todo)), write("added task "), 
-    asserta(task(X, todo)), 
+write(X).
-    write("added task "), 
+check(X) :- task(X, todo), asserta(task(X, done)), retractall(task(X, todo)), 
-    write(X).
+write("marked task "), write(X), write(" as done").
-check(X) :- 
-    task(X, todo), 
-    asserta(task(X, done)), 
-    retractall(task(X, todo)), 
-    write("marked "), 
-    write(X), 
-    write(" as done").
-check(X) :- idx(X, Task), check(Task).
 
 
 save_task(Task, Stream) :-
@@ -64,24 +45,17 @@ save :-
 
 load_task(Stream) :- 
     read(Stream, Task),
-    Task \= end_of_file,
+    Task = end_of_file,
-%    write("reading: "),
+    close(Stream).
-%    write(Task),
-%    nl,
-    asserta(Task),
-    load_task(Stream).
 
 load_task(Stream) :- 
     read(Stream, Task),
-    Task = end_of_file,
+    asserta(Task),
-%    write("reading last: "),
+    load_task(Stream).
-%    write(Task),
-    close(Stream).
-
 load :-
     open('data.pl', read, Stream),
     load_task(Stream).
 
 clear :- retractall(task(_, _)).
 
-load.
+consult(data).