From caf7016620bf4bf742d902454d7fcbdebfeb27e0 Mon Sep 17 00:00:00 2001
From: Mart Lubbers <mart@martlubbers.net>
Date: Sun, 29 May 2016 20:52:28 +0200
Subject: [PATCH] hoi

---
 examples/higher.spl  | 16 +------------
 examples/parsing.spl | 55 ++++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 56 insertions(+), 15 deletions(-)
 create mode 100644 examples/parsing.spl

diff --git a/examples/higher.spl b/examples/higher.spl
index 1237743..5e3429f 100644
--- a/examples/higher.spl
+++ b/examples/higher.spl
@@ -36,23 +36,9 @@ intList(x){
 	return l;
 }
 
-printIntList(l) :: [Int] -> Void{
-    print('[');
-	if(!isEmpty(l)){
-		print(l.hd);
-		l = l.tl;
-	}
-	while(!isEmpty(l)){
-		print(", ", l.hd);
-		l = l.tl;
-	}
-	print("]\n");
-}
-
 main(){
 	print("faculty of 5 is: ", foldr(\x y->x*y, 1, intList(5)));
 	print("sum of 1..5 is: ", foldr(\x y->x+y, 0, intList(5)));
 	print("filter evens from 0..12 is: ");
-	printIntList(filter(\x->x%2 == 0, intList(12)));
-    printIntList(1:2:3:[]);
+	print("sum of 0..12 but only the evens: ", foldr(\x y->x+y, 0, filter(\x->x%2 == 0, intList(12))));
 }
diff --git a/examples/parsing.spl b/examples/parsing.spl
new file mode 100644
index 0000000..96160bd
--- /dev/null
+++ b/examples/parsing.spl
@@ -0,0 +1,55 @@
+toInt(x) :: Char -> Int{
+	if(x == '0'){ return 0;
+	} else { if(x == '1'){ return 1;
+	} else { if(x == '2'){ return 2;
+	} else { if(x == '3'){ return 3;
+	} else { if(x == '4'){ return 4;
+	} else { if(x == '5'){ return 5;
+	} else { if(x == '6'){ return 6;
+	} else { if(x == '7'){ return 7;
+	} else { if(x == '8'){ return 8;
+	} else { if(x == '9'){ return 9;
+	} else { return -1; }}}}}}}}}}
+}
+
+isDigit(x) :: Char -> Bool {
+	return toInt(x) != -1;
+}
+
+strToInt(x) :: [Char] -> Int {
+	[Char] xs = x;
+	var i = 0;
+	var m = 1;
+	if(!isEmpty(x)){
+		if(xs.hd == '-'){
+			xs = xs.tl;
+			m = -1;
+		}
+
+		while(!isEmpty(xs)){
+			i = i*10 + toInt(xs.hd);
+			xs = xs.tl;
+		}
+	}
+	return i*m;
+}
+
+printList(p, l) {
+    print('[');
+	if(!isEmpty(l)){
+		p(l.hd);
+		l = l.tl;
+	}
+	while(!isEmpty(l)){
+		print(", ");
+		p(l.hd);
+		l = l.tl;
+	}
+	print("]\n");
+}
+
+main(){
+	var num = "-1234";
+
+	printList(print, 1 : 2 : []);
+}
-- 
2.20.1