Initial data commit

Task/Search-a-list/D/search-a-list.d

@@ -0,0 +1,18 @@
+import std.algorithm, std.range, std.string;
+
+auto firstIndex(R, T)(R hay, T needle) {
+  auto i = countUntil(hay, needle);
+  if (i == -1)
+    throw new Exception("No needle found in haystack");
+  return i;
+}
+
+auto lastIndex(R, T)(R hay, T needle) {
+  return walkLength(hay) - firstIndex(retro(hay), needle) - 1;
+}
+
+void main() {
+  auto h = split("Zig Zag Wally Ronald Bush Krusty Charlie Bush Bozo");
+  assert(firstIndex(h, "Bush") == 4);
+  assert(lastIndex(h, "Bush") == 7);
+}