Add orderedHist.updateKeys(), to explicitly initialize the histogram keys for sorting. It's more readable than implicit assumption that Len() will be called by Sort() before sorting.
Add orderedHist.updateKeys(), to explicitly initialize the histogram keys
for sorting. It's more readable than implicit assumption that Len() will
be called by Sort() before sorting.

zagrodzki/goscope,zagrodzki/goscope,zagrodzki/goscope