From 417a70713b15d7b00d4b16190fdefe60b8369fd0 Mon Sep 17 00:00:00 2001
From: Mike J Innes <mike.j.innes@gmail.com>
Date: Tue, 21 Feb 2017 09:05:08 +0000
Subject: [PATCH] julia's map is shitty

---
 src/backend/mxnet/model.jl | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/src/backend/mxnet/model.jl b/src/backend/mxnet/model.jl
index 0a1e76f8..588547b7 100644
--- a/src/backend/mxnet/model.jl
+++ b/src/backend/mxnet/model.jl
@@ -13,6 +13,7 @@ tond(xs::AArray) = copy!(mx.zeros(size(xs)), xs)
 ndzero!(xs::mx.NDArray) = copy!(xs, mx.zeros(size(xs)))
 
 function mxargs(args)
+  isempty(args) && return Dict{Symbol,mx.NDArray}()
   map(args) do kv
     arg, value = kv
     arg => tond(value)
@@ -20,6 +21,7 @@ function mxargs(args)
 end
 
 function mxgrads(mxargs)
+  isempty(mxargs) && return Dict{Symbol,mx.NDArray}()
   map(mxargs) do kv
     arg, value = kv
     arg => mx.zeros(size(value))