fix fexpr.cc

samukweku · samukweku · commit 67890c5c2d93 · 2023-03-12T15:24:06.000+11:00
diff --git a/src/core/expr/fexpr.cc b/src/core/expr/fexpr.cc
@@ -534,7 +534,8 @@ DECLARE_METHOD(&PyFExpr::min)
 
 oobj PyFExpr::nth(const XArgs& args) {
   auto nthFn = oobj::import("datatable", "nth");
-  auto n = args[1].to<py::oobj>(py::oint(0));
+  oobj n = args[0].to_oobj() ? args[0].to_oobj() 
+                             : py::oint(0);
   oobj skipna = args[1].to_oobj_or_none();
   return nthFn.call({this, n, skipna});
 }

Original file line number	Diff line number	Diff line change
`@@ -534,7 +534,8 @@ DECLARE_METHOD(&PyFExpr::min)`
`534`	`534`
`535`	`535`	`oobj PyFExpr::nth(const XArgs& args) {`
`536`	`536`	`auto nthFn = oobj::import("datatable", "nth");`
`537`		`- auto n = args[1].to<py::oobj>(py::oint(0));`
	`537`	`+ oobj n = args[0].to_oobj() ? args[0].to_oobj()`
	`538`	`+ : py::oint(0);`
`538`	`539`	`oobj skipna = args[1].to_oobj_or_none();`
`539`	`540`	`return nthFn.call({this, n, skipna});`
`540`	`541`	`}`