@@ -209,6 +209,25 @@
 	for i, v in ipairs(c) do
 		if c[1](exp) then return c[2](exp) end
 	end
 end
+
+fn.select = function(tbl, prop, ...)
+	local keycache
+	local check if type(prop) == 'function' then
+		check = prop
+		keycache = ...
+	else
+		local val val, keycache = ...
+		check = function(ent) return ent[prop] == val end
+	end
+	for k,v in pairs(tbl) do
+		if (not keycache) or (not keycache[k]) then -- help avoid expensive selectors
+			if check(v,k) then
+				if keycache then keycache[k] = true end
+				return v, k
+			end
+		end
+	end
+end
 
 return fn