Add return value to option parsing, to make it possible to bail out if an argument is deemed invalid during parsing.

1 files changed, 8 insertions, 0 deletions

diff --git a/example.cpp b/example.cpp
index 73988aa..e273c2f 100644
--- a/example.cpp
+++ b/example.cpp
@@ -8,27 +8,35 @@ int main(int argc, char* argv[]) {
 	dg::Options opt;
 	opt.add("verbose", no_argument, &verbose_flag, 1, [&]() {
 		std::cout << "verbose: " << verbose_flag << "\n";
+		return 0;
 	});
 	opt.add("brief", no_argument, &verbose_flag, 0, [&]() {
 		std::cout << "brief: " << verbose_flag << "\n";
+		return 0;
 	});
 	opt.add("add", no_argument, 'a', [&]() {
 		std::cout << "add\n";
+		return 0;
 	});
 	opt.add("append", no_argument, 'b', [&]() {
 		std::cout << "append\n";
+		return 0;
 	});
 	opt.add("delete", required_argument, 'd', [&]() {
 		std::cout << "delete: " << optarg << "\n";
+		return 0;
 	});
 	opt.add("create", required_argument, 'c', [&]() {
 		std::cout << "create: " << optarg << "\n";
+		return 0;
 	});
 	opt.add("file", required_argument, 'f', [&]() {
 		std::cout << "file: " << optarg << "\n";
+		return 0;
 	});
 	opt.add("help", no_argument, '?', [&]() {
 		std::cout << "usage stuff\n";
+		return 0;
 	});
 
 	opt.process(argc, argv);