From deac82281d20a27fffbd297fccf4932ad323a0aa Mon Sep 17 00:00:00 2001
From: Doug Strain <dstrain@google.com>
Date: Thu, 8 Sep 2022 11:20:16 -0700
Subject: [PATCH] Update DropNegligible to cirq.drop_negligible_operations
 (#799)

- This changed in Cirq 1.0.
---
 .../circuits_2_diagonal_coulomb_trotter.ipynb        | 12 ++++++------
 1 file changed, 6 insertions(+), 6 deletions(-)

diff --git a/docs/tutorials/circuits_2_diagonal_coulomb_trotter.ipynb b/docs/tutorials/circuits_2_diagonal_coulomb_trotter.ipynb
index 239007e9..53ffd7aa 100644
--- a/docs/tutorials/circuits_2_diagonal_coulomb_trotter.ipynb
+++ b/docs/tutorials/circuits_2_diagonal_coulomb_trotter.ipynb
@@ -251,7 +251,7 @@
     "    strategy=cirq.InsertStrategy.EARLIEST)\n",
     "\n",
     "# Print circuit.\n",
-    "cirq.DropNegligible().optimize_circuit(swap_network_trotter_step)\n",
+    "swap_network_trotter_step=cirq.drop_negligible_operations(swap_network_trotter_step)\n",
     "print(swap_network_trotter_step.to_text_diagram(transpose=True))"
    ]
   },
@@ -277,7 +277,7 @@
     "        qubits, hamiltonian, time, n_steps, order,\n",
     "        algorithm=trotter.SPLIT_OPERATOR),\n",
     "    strategy=cirq.InsertStrategy.EARLIEST)\n",
-    "cirq.DropNegligible().optimize_circuit(split_operator_trotter_step)\n",
+    "split_operator_trotter_step=cirq.drop_negligible_operations(split_operator_trotter_step)\n",
     "print(split_operator_trotter_step.to_text_diagram(transpose=True))"
    ]
   },
@@ -352,7 +352,7 @@
     "        qubits, hamiltonian, time, n_steps, order,\n",
     "        algorithm=trotter.LINEAR_SWAP_NETWORK),\n",
     "    strategy=cirq.InsertStrategy.EARLIEST)\n",
-    "cirq.DropNegligible().optimize_circuit(swap_network_trotter_step)\n",
+    "swap_network_trotter_step=cirq.drop_negligible_operations(swap_network_trotter_step)\n",
     "print(swap_network_trotter_step.to_text_diagram(transpose=True))"
    ]
   },
@@ -379,7 +379,7 @@
     "        algorithm=trotter.LINEAR_SWAP_NETWORK,\n",
     "        omit_final_swaps=True),\n",
     "    strategy=cirq.InsertStrategy.EARLIEST)\n",
-    "cirq.DropNegligible().optimize_circuit(swap_network_trotter_step)\n",
+    "swap_network_trotter_step=cirq.drop_negligible_operations(swap_network_trotter_step)\n",
     "print(swap_network_trotter_step.to_text_diagram(transpose=True))"
    ]
   },
@@ -407,7 +407,7 @@
     "        qubits, hamiltonian, time, n_steps, order,\n",
     "        algorithm=trotter.LINEAR_SWAP_NETWORK),\n",
     "    strategy=cirq.InsertStrategy.EARLIEST)\n",
-    "cirq.DropNegligible().optimize_circuit(swap_network_trotter_step)\n",
+    "swap_network_trotter_step = cirq.drop_negligible_operations(swap_network_trotter_step)\n",
     "print(swap_network_trotter_step.to_text_diagram(transpose=True))"
    ]
   },
@@ -469,7 +469,7 @@
     "        controlled_unitary))\n",
     "\n",
     "# Print the circuit.\n",
-    "cirq.DropNegligible().optimize_circuit(circuit)\n",
+    "circuit=cirq.drop_negligible_operations(circuit)\n",
     "print(circuit.to_text_diagram(transpose=True))"
    ]
   }