fixed CRAN note

ucbds-infra · Mar 23, 2022 · 2adecdc · 2adecdc
1 parent 2913099
commit 2adecdc
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Showing 2 changed files with 3 additions and 2 deletions.
diff --git a/DESCRIPTION b/DESCRIPTION
@@ -25,6 +25,7 @@ Imports:
   jsonlite,
   pryr,
   R6,
-  zip
+  zip,
+  methods
 Suggests:
   IRdisplay
diff --git a/R/ottr.r b/R/ottr.r
@@ -446,7 +446,7 @@ update_ast_check_calls = function(tree, list_name) {
   list_idx = 1
   for (i in seq_along(tree)) {
     expr = tree[[i]]
-    if (class(expr) == "=") {
+    if (methods::is(expr, "=")) {
       right_expr = expr[[3]]
       call = right_expr[[1]]
       if (length(call) >= 3) {