From ffe3f1a43648678abfd1537c6bca7a4d6e077b6f Mon Sep 17 00:00:00 2001
From: Nick Mayhall <nmayhall@vt.edu>
Date: Wed, 27 Sep 2023 09:40:28 -0400
Subject: [PATCH] improved clip! a tiny bit

---
 src/type_PauliSum.jl | 10 +---------
 1 file changed, 1 insertion(+), 9 deletions(-)

diff --git a/src/type_PauliSum.jl b/src/type_PauliSum.jl
index 98dc959..d3f09e6 100644
--- a/src/type_PauliSum.jl
+++ b/src/type_PauliSum.jl
@@ -167,15 +167,7 @@ end
 Delete Pauli's with coeffs smaller than thresh
 """
 function clip!(ps::PauliSum; thresh=1e-16)
-    to_delete = []
-    for (op,coeff) in ps.ops
-        if abs(coeff) < thresh
-            push!(to_delete, op)
-        end
-    end
-    for k in to_delete
-        delete!(ps.ops, k)
-    end
+    filter!(p->abs(p.second) > thresh, ps.ops)
 end
 
 """