Fix reapply for Sequential

Author: juliohm

src/transforms/sequential.jl

@@ -40,7 +40,7 @@ function reapply(s::Sequential, table, cache)
 
   current = table
   for (ctransform, ccache) in zip(s.transforms, cache)
-    current, _ = reapply(ctransform, current, ccache)
+    current = reapply(ctransform, current, ccache)
   end
   current
 end

test/transforms.jl

@@ -407,6 +407,13 @@
     @test isapprox(mean(r.x), mean(t.x), atol=1e-8)
     @test isapprox(std(r.x), std(t.x), atol=1e-8)
 
+    # reapply with Sequential transform
+    t = Table(x=rand(1000))
+    T = ZScore() → Quantile()
+    n1, c1 = apply(T, t)
+    n2 = reapply(T, t, c1)
+    @test n1 == n2
+
     # reapply with Parallel transform
     t = Table(x=rand(1000))
     T = ZScore() ⊔ Quantile()