From 07daa9d6bf2f0c071225aecf4f03edb13c43918c Mon Sep 17 00:00:00 2001
From: Marcin <marcin@auterion.com>
Date: Wed, 10 Jan 2024 10:45:24 +0100
Subject: [PATCH] add hasField method

---
 ulog_cpp/subscription.hpp | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/ulog_cpp/subscription.hpp b/ulog_cpp/subscription.hpp
index da4a936..b0b7e79 100644
--- a/ulog_cpp/subscription.hpp
+++ b/ulog_cpp/subscription.hpp
@@ -93,6 +93,15 @@ class TypedDataView {
    */
   const MessageFormat& format() const { return _message_format_ref; }
 
+  /**
+   * Checks if a field is present in the underlying MessageFormat
+   */
+  bool hasField(const std::string& field_name) const
+  {
+    const auto iter = _message_format_ref.fieldMap().find(field_name);
+    return iter != _message_format_ref.fieldMap().end() && iter->second->definitionResolved();
+  }
+
   /**
    * @return The underlying raw data vector
    */