Initial data commit

Task/Loop-over-multiple-arrays-simultaneously/E/loop-over-multiple-arrays-simultaneously-1.e

@@ -0,0 +1,7 @@
+def a1 := ["a","b","c"]
+def a2 := ["A","B","C"]
+def a3 := ["1","2","3"]
+
+for i => v1 in a1 {
+    println(v1, a2[i], a3[i])
+}

Task/Loop-over-multiple-arrays-simultaneously/E/loop-over-multiple-arrays-simultaneously-2.e

@@ -0,0 +1,3 @@
+for [v1, v2, v3] in zip(a1, a2, a3) {
+    println(v1, v2, v3)
+}

Task/Loop-over-multiple-arrays-simultaneously/E/loop-over-multiple-arrays-simultaneously-3.e

@@ -0,0 +1,28 @@
+def zip {
+  to run(l1, l2) {
+    def zipped {
+      to iterate(f) {
+        for i in int >= 0 {
+          f(i, [l1.fetch(i, fn { return }),
+                l2.fetch(i, fn { return })])
+        }
+      }
+    }
+    return zipped
+  }
+
+  match [`run`, lists] {
+    def zipped {
+      to iterate(f) {
+        for i in int >= 0 {
+          var tuple := []
+          for l in lists {
+            tuple with= l.fetch(i, fn { return })
+          }
+          f(i, tuple)
+        }
+      }
+    }
+    zipped
+  }
+}