Was previously attempting to cast directly from []interface{} to
[]string or []int which Go doesn't support. Instead, we iterate over and
cast each value (error'ing if the value is not the correct format).
Fixes #580
Was previously attempting to cast directly from []interface{} to
[]string or []int which Go doesn't support. Instead, we iterate over and
cast each value (error'ing if the value is not the correct format).
Fixes #580