From: Mikko Rasa <tdb@tdb.fi>
Date: Mon, 19 Dec 2022 10:06:20 +0000 (+0200)
Subject: Add an algorithm to check for existence of a value in a container
X-Git-Url: http://git.tdb.fi/?p=libs%2Fcore.git;a=commitdiff_plain;h=de6ba04370a505484747a81c74ad8f532b4b88e6

Add an algorithm to check for existence of a value in a container
---

diff --git a/source/core/algorithm.h b/source/core/algorithm.h
index 251a81e..30ca267 100644
--- a/source/core/algorithm.h
+++ b/source/core/algorithm.h
@@ -30,6 +30,20 @@ inline typename Container::const_iterator find_if(const Container &cont, Predica
 	return std::find_if(cont.begin(), cont.end(), pred);
 }
 
+template<typename T>
+struct ValueMatch
+{
+	const T &value;
+
+	bool operator()(const T &v) { return v==value; }
+};
+
+template<typename Container, typename T>
+inline bool any_equals(Container &cont, const T &value)
+{
+	return std::any_of(cont.begin(), cont.end(), ValueMatch<T>{value});
+}
+
 template<typename Container, typename T>
 inline typename Container::iterator lower_bound(Container &cont, const T &value)
 {