From 0e8c4de4b506638f0d69b6601ee0920660de0b05 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Bastian=20K=C3=B6cher?= <bkchr@users.noreply.github.com>
Date: Fri, 5 Jul 2019 15:41:51 +0200
Subject: [PATCH] Implement `SelectInitialValidators` for `()` (#3037)

This is quite more idiomatic substrate :D
---
 substrate/srml/session/src/lib.rs | 6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)

diff --git a/substrate/srml/session/src/lib.rs b/substrate/srml/session/src/lib.rs
index 1451b62060..981cc930eb 100644
--- a/substrate/srml/session/src/lib.rs
+++ b/substrate/srml/session/src/lib.rs
@@ -220,9 +220,7 @@ pub trait SelectInitialValidators<T: Trait> {
 	fn select_initial_validators() -> Option<Vec<T::AccountId>>;
 }
 
-/// Implementation of `SelectInitialValidators` that does nothing.
-pub struct AllValidators;
-impl<T: Trait> SelectInitialValidators<T> for AllValidators {
+impl<T: Trait> SelectInitialValidators<T> for () {
 	fn select_initial_validators() -> Option<Vec<T::AccountId>> {
 		None
 	}
@@ -565,7 +563,7 @@ mod tests {
 		type SessionHandler = TestSessionHandler;
 		type Keys = UintAuthorityId;
 		type Event = ();
-		type SelectInitialValidators = AllValidators;
+		type SelectInitialValidators = ();
 	}
 
 	type System = system::Module<Test>;