From 25e3d4994106c74a14adf38ce1d52cb1b1788be7 Mon Sep 17 00:00:00 2001
From: sabrina-shanman <sabrina@highfidelity.io>
Date: Wed, 5 Dec 2018 17:10:18 -0800
Subject: [PATCH] Add VaryingSet1 to Task aliases

---
 libraries/task/src/task/Task.h    |  1 +
 libraries/task/src/task/Varying.h | 20 ++++++++++++++++++++
 2 files changed, 21 insertions(+)

diff --git a/libraries/task/src/task/Task.h b/libraries/task/src/task/Task.h
index fb7012b16c..9647157a54 100644
--- a/libraries/task/src/task/Task.h
+++ b/libraries/task/src/task/Task.h
@@ -411,6 +411,7 @@ protected:
     using Task = task::Task<ContextType, TimeProfiler>; \
     using Engine = task::Engine<ContextType, TimeProfiler>; \
     using Varying = task::Varying; \
+    template < typename T0 > using VaryingSet1 = task::VaryingSet1<T0>; \
     template < typename T0, typename T1 > using VaryingSet2 = task::VaryingSet2<T0, T1>; \
     template < typename T0, typename T1, typename T2 > using VaryingSet3 = task::VaryingSet3<T0, T1, T2>; \
     template < typename T0, typename T1, typename T2, typename T3 > using VaryingSet4 = task::VaryingSet4<T0, T1, T2, T3>; \
diff --git a/libraries/task/src/task/Varying.h b/libraries/task/src/task/Varying.h
index 9536db2799..60f3c6dec4 100644
--- a/libraries/task/src/task/Varying.h
+++ b/libraries/task/src/task/Varying.h
@@ -69,6 +69,26 @@ protected:
     std::shared_ptr<Concept> _concept;
 };
 
+template < typename T0 >
+class VaryingSet1 : public std::tuple<Varying> {
+public:
+    using Parent = std::tuple<Varying>;
+
+    VaryingSet1() : Parent(Varying(T0())) {}
+    VaryingSet1(const VaryingSet1& src) : Parent(std::get<0>(src)) {}
+    VaryingSet1(const Varying& first) : Parent(first) {}
+
+    const T0& get0() const { return std::get<0>((*this)).template get<T0>(); }
+    T0& edit0() { return std::get<0>((*this)).template edit<T0>(); }
+
+    virtual Varying operator[] (uint8_t index) const {
+        return std::get<0>((*this));
+    }
+    virtual uint8_t length() const { return 1; }
+
+    Varying asVarying() const { return Varying((*this)); }
+};
+
 using VaryingPairBase = std::pair<Varying, Varying>;
 template < typename T0, typename T1 >
 class VaryingSet2 : public VaryingPairBase {