Data update

Task/Nested-templated-data/Pluto/nested-templated-data.pluto

@@ -0,0 +1,20 @@
+require "map"
+local fmt = require "fmt" -- v1.0.1 or higher
+
+local function with_payload(template, payload, used)
+    return template:mapped( |item| -> do
+        if type(item) == "table" then
+            return with_payload(item, payload, used)
+        else
+            used:insert(item)
+            return $"'{payload[item + 1]}'"
+        end
+    end)
+end
+
+local p = {"Payload#0", "Payload#1", "Payload#2", "Payload#3", "Payload#4", "Payload#5", "Payload#6"}
+local t = {{{1, 2}, {3, 4, 1}, 5}}
+local used = {}
+fmt.lprint(with_payload(t, p, used))
+local unused = set.of(range(0, 6):unpack()):except(set.of(used:unpack()))
+fmt.print("\nThe unused payloads have indices of %s.", unused)