June 2018 Update

Task/Menu/Julia/menu.julia

@@ -0,0 +1,28 @@
+function _menu(items)
+    for (ind, item) in enumerate(items)
+        @printf "  %2i) %s\n" ind item
+    end
+end
+
+_ok(::Any,::Any) = false
+function _ok(reply::AbstractString, itemcount)
+    n = tryparse(Int, reply)
+    return isnull(n) || 0 ≤ get(n) ≤ itemcount
+end
+
+"Prompt to select an item from the items"
+function _selector(items, prompt::AbstractString)
+    isempty(items) && return ""
+    reply = -1
+    itemcount = length(items)
+    while !_ok(reply, itemcount)
+        _menu(items)
+        print(prompt)
+        reply = strip(readline(STDIN))
+    end
+    return items[parse(Int, reply)]
+end
+
+items = ["fee fie", "huff and puff", "mirror mirror", "tick tock"]
+item = _selector(items, "Which is from the three pigs: ")
+println("You chose: ", item)