VS2015 cimpiler error

[Junkai-Liu]

When I complie under VS2015, it occurs error:
e:\bundlefusion\bundlefusion\external\mlib\include\core-mesh\meshdata.cpp(575): error C2280: “ml::MeshData &ml::MeshData::operator =(const ml::MeshData &)”: attempting to reference a deleted function

I refer to the meshdata.cpp and can't find operator =(const ml::MeshData &) definition or declaration. there only exists operator =(const ml::MeshData &&),I suppose maybe this lead to the problem, but when i overload operator =which input parameter is const ml::MeshData &. it doesn't work.

my mlib version is up to date .How can I fix this problem.?

[lpwwpl]

i use
void operator=(const MeshData& d) {
m_Vertices = std::move(d.m_Vertices);
m_Normals = std::move(d.m_Normals);
m_TextureCoords = std::move(d.m_TextureCoords);
m_Colors = std::move(d.m_Colors);
m_FaceIndicesVertices = std::move(d.m_FaceIndicesVertices);
m_FaceIndicesNormals = std::move(d.m_FaceIndicesNormals);
m_FaceIndicesTextureCoords = std::move(d.m_FaceIndicesTextureCoords);
m_FaceIndicesColors = std::move(d.m_FaceIndicesColors);
m_materialFile = std::move(d.m_materialFile);
m_indicesByMaterial = std::move(d.m_indicesByMaterial);
m_indicesByGroup = std::move(d.m_indicesByGroup);
}