Hello,
How would one create user defined operations on unicode strings? I have some code where I want to define a string concatenation binary operator:

import graphblas as gb

def concat(a,b):
    return a + b
A = gb.Matrix.from_coo([0,1], [0,1], [“a”, “b”])
bin_op = gb.core.operator.BinaryOp.register_anonymous(concat, is_udt = True)

print(bin_op(A&A).new())

However, it is giving me the error
ValueError: Unknown dtype: unicode_type of type <class 'numba.core.types.misc.UnicodeType'>.

I would guess that this might require some user defined string type, but I haven't had much success getting it to work.