ok yeah

test/py/py.py

@@ -84,3 +84,16 @@ def unstring(isbn):
 maxpool2d=apple.jit("([(⋉)/* _1e314 (x::M float)] ⨳ {2∘2,2∘2})")
 maxpool2d(A)
 assert ((maxpool2d(A)==np.array([[200.,119.],[120.,49.]])).all())
+
+hexagon=apple.jit('''
+λ𝜃.
+{
+  hex ⟜ ⟨(3%2,√3%2),(0,√3),(_3%2,√3%2),(_3%2,_(√3)%2),(0,_(√3)),(3%2,_(√3)%2)⟩;
+  tie ← [{.x⊳x];
+  rot ← λ𝜃.λ(𝑥,𝑦). (𝑥*cos.𝜃-𝑦*sin.𝜃,𝑥*sin.𝜃+𝑦*cos.𝜃);
+  -- T ← λk.λl.λ(x,y). (x+3*k+(3%2)*l,y+(√3%2)*l);
+  tie (rot 𝜃'hex)
+}''')
+expected=np.array([(1.5,0.8660254),(0.,1.73205081),(-1.5,0.8660254),(-1.5,-0.8660254),(0.,-1.73205081),(1.5,-0.8660254),(1.5,0.8660254)], dtype="f8,f8")
+actual=hexagon(0)
+print(expected);print(actual)