Use @munificent's single-argument reduce

2015-01-16 09:26:19 +01:00
parent 5a7b70d45c
commit 5cfb638fd1
3 changed files with 26 additions and 3 deletions
@@ -72,7 +72,18 @@ static const char* libSource =
 "    return acc\n"
 "  }\n"
 "\n"
-"  reduce(f) { this[1..-1].reduce(this[0], f) }\n"
+"  reduce(f) {\n"
+"    var iter = iterate(null)\n"
+"    if (!iter) Fiber.abort(\"Can't reduce an empty sequence.\")\n"
+"\n"
+"    // Seed with the first element.\n"
+"    var result = iteratorValue(iter)\n"
+"    while (iter = iterate(iter)) {\n"
+"      result = f.call(result, iteratorValue(iter))\n"
+"    }\n"
+"\n"
+"    return result\n"
+"  }\n"
 "\n"
 "}\n"
 "\n"