An operation as understood by Quirk's parser.

Basically just a series of text identifiers for each qubit, and some rules for how things can be combined.

*keys The JSON object(s) that each qubit is turned into when explaining a gate to Quirk. For example, a CNOT is turned into the keys ["•", "X"].

Note that, when keys terminates early, it is implied that later qubits should use the same key as the last key.

can_merge Whether or not it is safe to merge a column containing this operation into a column containing other operations. For example, this is not safe if the column contains a control because the control would also apply to the other column's gates.



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