def fast_apply(self, f, names):
# must return keys::list, values::list, mutated::bool
try:
starts, ends = lib.generate_slices(self.slabels, self.ngroups)
except Exception:
# fails when all -1
return [], True
sdata = self._get_sorted_data()
return reduction.apply_frame_axis0(sdata, f, names, starts, ends)
def fast_apply(self, f, names):
# must return keys::list, values::list, mutated::bool
try:
starts, ends = lib.generate_slices(self.slabels, self.ngroups)
except Exception:
# fails when all -1
return [], True
sdata = self._get_sorted_data()
return reduction.apply_frame_axis0(sdata, f, names, starts, ends)
def fast_apply(self, f: F, sdata: FrameOrSeries, names):
# must return keys::list, values::list, mutated::bool
starts, ends = lib.generate_slices(self.slabels, self.ngroups)
return libreduction.apply_frame_axis0(sdata, f, names, starts, ends)
def fast_apply(self, f, names):
# must return keys::list, values::list, mutated::bool
starts, ends = lib.generate_slices(self.slabels, self.ngroups)
sdata = self._get_sorted_data()
return libreduction.apply_frame_axis0(sdata, f, names, starts, ends)
