workaround for apache#55

src/ndarray.jl

@@ -940,6 +940,13 @@ function _import_ndarray_functions(;gen_docs=false)
       _use_vars = Expr(:ref, :MX_handle, [symbol("in$i") for i=1:n_used_vars]...)
       _scalars  = Expr(:ref, :MX_float, [symbol("sca$i") for i=1:n_scalars]...)
       _mut_vars = Expr(:ref, :MX_handle, [symbol("out$i") for i=1:n_mutate_vars]...)
+
+      # XXX: hacky way of solving the problem that the arguments of `dot` should be swapped
+      # See https://github.com/dmlc/MXNet.jl/issues/55
+      if func_name == :dot
+        _use_vars.args[2:end] = flipdim(_use_vars.args[2:end], 1)
+      end
+
       stmt_call = Expr(:call, :_invoke_mxfunction, func_handle, _use_vars, _scalars, _mut_vars)
       if n_mutate_vars == 1
         stmt_ret = :(return out1)

test/unittest/ndarray.jl

@@ -260,6 +260,17 @@ function test_nd_as_jl()
   @test reldiff(copy(z)[:,2:end], copy(x)[:,2:end]) < 1e-6
 end
 
+function test_dot()
+  dims1 = (2, 3)
+  dims2 = (3, 8)
+  info("NDArray::dot")
+
+  x = mx.zeros(dims1)
+  y = mx.zeros(dims2)
+  z = mx.dot(x, y)
+  @test size(z) == (2, 8)
+end
+
 
 ################################################################################
 # Run tests
@@ -276,5 +287,6 @@ test_saveload()
 test_clip()
 test_sqrt()
 test_nd_as_jl()
+test_dot()
 
 end