move batchone util

src/backend/tensorflow/model.jl

@@ -16,9 +16,6 @@ function tf(model)
         gradients(output, input))
 end
 
-batchone(x) = Batch((x,))
-batchone(x::Batch) = x
-
 function batch(xs)
   dims = ndims(xs)-1
   T = Array{eltype(xs),dims}

src/dims/batching.jl

@@ -1,4 +1,4 @@
-export Batch
+export Batch, batchone
 
 immutable Batch{T,S} <: AbstractVector{T}
   data::CatMat{T,S}
@@ -11,6 +11,9 @@ Batch(xs) = Batch(CatMat(xs))
 convert{T,S}(::Type{Batch{T,S}},storage::S) =
   Batch{T,S}(storage)
 
+batchone(x) = Batch((x,))
+batchone(x::Batch) = x
+
 Media.render{T<:Batch}(i::Juno.Inline, b::Type{T}) =
   render(i, Row(Juno.typ("Batch"), text"{", eltype(T), text"}"))