compilation error on osx with python 3.6 (#154)

Author: clonker

deeptime/data/include/boundary_conditions.h

@@ -11,7 +11,7 @@
 
 namespace deeptime::data {
 
-template<typename State, int D, typename VMIN, typename VMAX, bool... periodic_dim>
+template<typename State, int D, typename vmin_type, typename vmax_type, bool... periodic_dim>
 struct BoundaryConditions {
     static_assert(sizeof...(periodic_dim) == D || sizeof...(periodic_dim) == 0);
     static constexpr int DIM = D;
@@ -20,8 +20,8 @@ struct BoundaryConditions {
     template<std::size_t d, typename T>
     static constexpr T apply_impl_d(T x) noexcept {
         if constexpr(apply_pbc[d]) {
-            auto vmax = std::tuple_element_t<d, VMAX>::num / std::tuple_element_t<d, VMAX>::den;
-            auto vmin = std::tuple_element_t<d, VMIN>::num / std::tuple_element_t<d, VMIN>::den;
+            auto vmax = std::tuple_element_t<d, vmax_type>::num / std::tuple_element_t<d, vmax_type>::den;
+            auto vmin = std::tuple_element_t<d, vmin_type>::num / std::tuple_element_t<d, vmin_type>::den;
             auto diam = vmax - vmin;
             while (x >= vmax) x -= diam;
             while (x < vmin) x += diam;

deeptime/data/include/systems.h

@@ -95,9 +95,9 @@ struct BickleyJet {
     static constexpr std::size_t DIM = 2;
     using dtype = T;
     using State = Vector<T, DIM>;
-    using VMIN = std::tuple<std::ratio<0, 1>, std::ratio<-3, 1>>;
-    using VMAX = std::tuple<std::ratio<20, 1>, std::ratio<3, 1>>;
-    using Boundary = BoundaryConditions<State, 2, VMIN, VMAX, PERIODIC, false>;
+    using vmin_type = std::tuple<std::ratio<0, 1>, std::ratio<-3, 1>>;
+    using vmax_type = std::tuple<std::ratio<20, 1>, std::ratio<3, 1>>;
+    using Boundary = BoundaryConditions<State, 2, vmin_type, vmax_type, PERIODIC, false>;
     using Integrator = RungeKutta<State, DIM, Boundary>;
 
     template<typename D>

devtools/azure-pipelines-osx.yml

@@ -5,6 +5,9 @@ jobs:
     vmImage: 'macOS-10.14'
   strategy:
     matrix:
+      Python36:
+        CONDA_PY: '3.6'
+        CONDA_NPY: '1.17'
       Python37:
         CONDA_PY: '3.7'
         CONDA_NPY: '1.19'