From abf805dd6b61dec138871087ee12bd27ed716a95 Mon Sep 17 00:00:00 2001
From: Wenqing Wang <wenqing.wang@ufz.de>
Date: Fri, 23 Dec 2016 15:31:25 +0100
Subject: [PATCH] [Base] Added a map inserting function
---
BaseLib/uniqueInsert.h | 14 ++++++++++++++
1 file changed, 14 insertions(+)
diff --git a/BaseLib/uniqueInsert.h b/BaseLib/uniqueInsert.h
index 25aa7e28479..de6b3488dc3 100644
--- a/BaseLib/uniqueInsert.h
+++ b/BaseLib/uniqueInsert.h
@@ -27,6 +27,20 @@ void uniquePushBack(Container& container, typename Container::value_type const&
container.push_back(element);
}
+//! Inserts the given \c key with the given \c value into the \c map if an entry with the
+//! given \c key does not yet exist; otherwise an \c error_message is printed and the
+//! program is aborted.
+template<typename Map, typename Key, typename Value>
+void insertMapIfKeyUniqueElseError(
+ Map& map, Key const& key, Value&& value,
+ std::string const& error_message)
+{
+ auto const inserted = map.emplace(key, std::forward<Value>(value));
+ if (!inserted.second) { // insertion failed, i.e., key already exists
+ OGS_FATAL("Failed insert %s. Key already exists.",
+ error_message.c_str());
+ }
+}
//! Inserts the given \c key with the given \c value into the \c map if an entry with the
//! given \c key does not yet exist; otherwise an \c error_message is printed and the
--
GitLab