String.trim

examples/euler8.zr

@@ -7,7 +7,7 @@ func main[] : I64
         let s: I64 = 1
         let j: I64 = 0
         while j < 13
-            s = s * Char.to_i64(String.nth(n, i + j))
+            s = s * Char.parse_i64(String.nth(n, i + j))
             j = j + 1
         if s > out
             out = s

examples/quicksort.zr

@@ -1,11 +1,13 @@
 func quicksort[arr: Array] : I64
     do_quicksort(arr, 0, Array.size(arr)-1)
+    return 0
 
 func do_quicksort[arr: Array, low: I64, high: I64] : I64
     if low < high
         let i: I64 = partition(arr, low, high)
         do_quicksort(arr, low, i - 1)
         do_quicksort(arr, i + 1, high)
+    return 0
 
 func partition[arr: Array, low: I64, high: I64] : I64
     let pivot: I64 = Array.nth(arr, high)

examples/rule110.zr

@@ -15,14 +15,13 @@ func rule110_step[state: Array] : Array
     return new_state
 
 func to_str[state: Array]: String
-    // TODO: very leaky
-    let o: String = ""
+    let out: String = malloc(Array.size(state))
     for i in 0:Array.size(state)
         if Array.nth(state, i)
-            o = String.concat(o, "#")
+            String.set(out, i, String.nth("#", 0))
         else
-            o = String.concat(o, " ")
-    return o
+            String.set(out, i, String.nth(" ", 0))
+    return out
 
 func main[] : I64
     let SIZE: I64 = 60