From 6208d5b97272cf92d87bb26ae47781f857a4ecf6 Mon Sep 17 00:00:00 2001
From: Stefano Carignano <70697517+starsfordummies@users.noreply.github.com>
Date: Wed, 14 Aug 2024 10:46:25 +0200
Subject: [PATCH] Sort output of `sites` (#185)

* sort output of sites(::Quantum) so sites are in order

* formatting

* use sort! to save nanobyte allocations
---
 src/Quantum.jl | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/Quantum.jl b/src/Quantum.jl
index 533cedb0f..5ce9751a1 100644
--- a/src/Quantum.jl
+++ b/src/Quantum.jl
@@ -108,7 +108,7 @@ Returns the sites of a [`Quantum`](@ref) Tensor Network.
 """
 function sites(tn::Quantum; kwargs...)
     if isempty(kwargs)
-        collect(keys(tn.sites))
+        sort!(collect(keys(tn.sites)))
     elseif keys(kwargs) === (:at,)
         findfirst(i -> i === kwargs[:at], tn.sites)
     else