Use an HashMap to store options in option manager

Turns out looking for options can get pretty slow, so O(1) lookup
seems better.

This should improve the performance of the #1460 issue

1 files changed, 1 insertions, 0 deletions

diff --git a/src/string.hh b/src/string.hh
index bfafa482..418ce298 100644
--- a/src/string.hh
+++ b/src/string.hh
@@ -257,6 +257,7 @@ private:
 static_assert(std::is_trivial<StringView>::value, "");
 
 template<> struct HashCompatible<String, StringView> : std::true_type {};
+template<> struct HashCompatible<StringView, String> : std::true_type {};
 
 inline String::String(StringView str) : String{str.begin(), str.length()} {}