1 files changed, 0 insertions, 75 deletions
diff --git a/system/doc/extensions/list_comrehensions.erl b/system/doc/extensions/list_comrehensions.erl
deleted file mode 100644
index f6a23b5dca..0000000000
--- a/system/doc/extensions/list_comrehensions.erl
+++ /dev/null
@@ -1,75 +0,0 @@
--module(zf).
-
--compile(export_all).
-
-
-%% Odd numbers.
-
-%%foo(L) -> [ X || X <- L, (X > X-1) == (X /= X-1) ].
-
-boo() -> [X||X <- [1,2,a,3,4,b,5,6], X > 3].
-boo1() -> [X||X <- [1,2,a,3,4,b,5,6], integer(X),X > 3].
-boo2() -> [{X,Y} || X <- [1,2,3], Y <- [a,b]].
-
-bar(L) -> [ X || X <- L, integer(X), gt(X, 3) ].
-
-bar(L, M) -> [ Y || X <- L, integer(X), gt(X, 3),
-		    Y <- M, float(Y), gt(X, Y)
-		   ].
-
-baz(L) -> [ X || X <- L, atom(X) ].
-
-buz(L, Min) -> [ X || Min > 3, X <- L, X >= Min ].
-
-gt(X, Y) when X > Y -> true;
-gt(X, Y) -> false.
-
-
-%% Return the Pythagorean triangles with sides 
-%% of total length less than N
-pyth(N) ->
-    [ {A,B,C} ||
-	A <- lists:seq(1,N),
-        B <- lists:seq(1,N),
-        C <- lists:seq(1,N),
-        A+B+C =< N,
-        A*A+B*B == C*C 
-    ].
-
-%% Cut the search space a bit..
-pyth2(N) ->
-    [ {A,B,C} ||
-	A <- lists:seq(1,N),
-        B <- lists:seq(1,N-A+1),
-        C <- lists:seq(1,N-A-B+2),
-        A+B+C =< N,
-        A*A+B*B == C*C ].
-
-%% Return the Cartesian product
-
-cp(A,B) ->
-    [ {X,Y} ||
-	X <- A,
-        Y <- B 
-    ].
-
-%% Return all permutations of a list
-perms([]) -> [[]];
-perms(L)  -> [ [H|T] || H <- L, T <- perms(L--[H]) ].
-
-%% Quick sort
-sort([X|Xs]) ->
-    sort([ Y || Y <- Xs, Y < X ]) ++
-	[X] ++
-	sort([ Y || Y <- Xs, Y >= X ]);
-sort([]) -> [].
-
-%% append
-
-append(L)   ->  [X||L1<-L,X<-L1].
-
-map(Fun, L) -> [Fun(X)||X<-L].
-
-filter(Pred, L) -> [X||X<-L,Pred(X)].
-
-select(X, L) ->  [Y || {X1,Y} <- L, X == X1].