From 10a7a647791fa3a24ec4f572f2573a6e0aaa881b Mon Sep 17 00:00:00 2001
From: levonwaveye <135352287+levonwaveye@users.noreply.github.com>
Date: Wed, 23 Oct 2024 13:14:32 -0700
Subject: [PATCH] Add ParseResult::contains method (#440)

---
 include/cxxopts.hpp | 6 ++++++
 test/options.cpp    | 3 +++
 2 files changed, 9 insertions(+)

diff --git a/include/cxxopts.hpp b/include/cxxopts.hpp
index a2e71fa..2819f50 100644
--- a/include/cxxopts.hpp
+++ b/include/cxxopts.hpp
@@ -1743,6 +1743,12 @@ CXXOPTS_DIAGNOSTIC_POP
     return viter->second.count();
   }
 
+  bool
+  contains(const std::string& o) const
+  {
+    return static_cast<bool>(count(o));
+  }
+
   const OptionValue&
   operator[](const std::string& option) const
   {
diff --git a/test/options.cpp b/test/options.cpp
index 647934c..60d2f05 100644
--- a/test/options.cpp
+++ b/test/options.cpp
@@ -89,6 +89,7 @@ TEST_CASE("Basic options", "[options]")
   auto result = options.parse(argc, actual_argv);
 
   CHECK(result.count("long") == 1);
+  CHECK(result.contains("long"));
   CHECK(result.count("s") == 1);
   CHECK(result.count("value") == 1);
   CHECK(result.count("a") == 1);
@@ -112,6 +113,8 @@ TEST_CASE("Basic options", "[options]")
   CHECK(arguments[2].key() == "value");
   CHECK(arguments[3].key() == "av");
 
+  CHECK(result.count("nothing") == 0);
+  CHECK_FALSE(result.contains("nothing"));
   CHECK_THROWS_AS(result["nothing"].as<std::string>(), cxxopts::exceptions::option_has_no_value);
 
   CHECK(options.program() == "tester");