def _solve( self, b ):
        Q, R = self.qr()
        return R.solve( Q.tr().mmul(b) )
Cleanup.
dataset/ETHPy150Open sunlightlabs/clearspending/completeness/statlib/matfunc.py/Matrix._solve--crossover with--dataset/ETHPy150Open GoogleCloudPlatform/PerfKitBenchmarker/perfkitbenchmarker/linux_benchmarks/cloud_bigtable_ycsb_benchmark.py/Cleanup