diff --git a/libqpdf/QPDFFormFieldObjectHelper.cc b/libqpdf/QPDFFormFieldObjectHelper.cc
index e4c40e5..113e98d 100644
--- a/libqpdf/QPDFFormFieldObjectHelper.cc
+++ b/libqpdf/QPDFFormFieldObjectHelper.cc
@@ -281,7 +281,7 @@ QPDFFormFieldObjectHelper::getChoices()
     for (auto const& item: getInheritableFieldValue("/Opt").as_array()) {
         if (item.isString()) {
             result.emplace_back(item.getUTF8Value());
-        } else if (item.isArray() && item.getArrayNItems() == 2) {
+        } else if (item.size() == 2) {
             auto display = item.getArrayItem(1);
             if (display.isString()) {
                 result.emplace_back(display.getUTF8Value());
diff --git a/libqpdf/QPDFOutlineObjectHelper.cc b/libqpdf/QPDFOutlineObjectHelper.cc
index 8d561f8..640826a 100644
--- a/libqpdf/QPDFOutlineObjectHelper.cc
+++ b/libqpdf/QPDFOutlineObjectHelper.cc
@@ -75,7 +75,7 @@ QPDFObjectHandle
 QPDFOutlineObjectHelper::getDestPage()
 {
     QPDFObjectHandle dest = getDest();
-    if ((dest.isArray()) && (dest.getArrayNItems() > 0)) {
+    if (!dest.empty() && dest.isArray()) {
         return dest.getArrayItem(0);
     }
     return QPDFObjectHandle::newNull();
diff --git a/libqpdf/QPDFPageObjectHelper.cc b/libqpdf/QPDFPageObjectHelper.cc
index b4fa720..1a0098c 100644
--- a/libqpdf/QPDFPageObjectHelper.cc
+++ b/libqpdf/QPDFPageObjectHelper.cc
@@ -445,14 +445,9 @@ std::vector<QPDFAnnotationObjectHelper>
 QPDFPageObjectHelper::getAnnotations(std::string const& only_subtype)
 {
     std::vector<QPDFAnnotationObjectHelper> result;
-    QPDFObjectHandle annots = oh().getKey("/Annots");
-    if (annots.isArray()) {
-        int nannots = annots.getArrayNItems();
-        for (int i = 0; i < nannots; ++i) {
-            QPDFObjectHandle annot = annots.getArrayItem(i);
-            if (annot.isDictionaryOfType("", only_subtype)) {
-                result.emplace_back(annot);
-            }
+    for (auto const& annot: oh().getKey("/Annots").as_array()) {
+        if (annot.isDictionaryOfType("", only_subtype)) {
+            result.emplace_back(annot);
         }
     }
     return result;