From 5947c028a9e5d586796b273538795bc1cc14785e Mon Sep 17 00:00:00 2001 From: Matthew Wild Date: Fri, 21 Sep 2018 14:27:46 +0100 Subject: util.iterators: Add sorted_pairs() method --- util/iterators.lua | 13 +++++++++++++ 1 file changed, 13 insertions(+) (limited to 'util') diff --git a/util/iterators.lua b/util/iterators.lua index 5d16d8c1..302cca36 100644 --- a/util/iterators.lua +++ b/util/iterators.lua @@ -177,6 +177,19 @@ function it.to_array(f, s, var) return t; end +function it.sorted_pairs(t, sort_func) + local keys = it.to_array(it.keys(t)); + table.sort(keys, sort_func); + local i = 0; + return function () + i = i + 1; + local key = keys[i]; + if key ~= nil then + return key, t[key]; + end + end; +end + -- Treat the return of an iterator as key,value pairs, -- and build a table function it.to_table(f, s, var) -- cgit v1.2.3