# Functions
BytesRange checks if starting index `startIdx`, ending index `endIdx` and len(b) passes sanity checks: * 0 <= startIdx * startIdx <= endIdx * endIdx < len(b).
# Structs
ErrEndGreaterThanLength means `endIdx` is greater or equal to the length.
ErrEndLessThanStart means `endIdx` value is less than `startIdx` value.
ErrStartLessThanZero means `startIdx` has negative value.