# Functions

DefaultIfBlank returns default value if parameter is blank,else parameter.
DefaultIfEmpty returns default value if parameter is empty,else parameter.
FirstNotBlank returns the first not blank parameter.
FirstNotEmpty returns the first not empty parameter.
FromBytes converts byte slice to string,can only be used in read-only.
IsAllBlank determines whether all string variable parameters are all blank.
IsAllEmpty determines whether all string variable parameters are all empty.
IsAnyBlank determines whether string variable parameters in which there is blank.
IsAnyEmpty determines whether string variable parameters in which there is empty.
IsBlank determines whether string is blank.
IsEmpty determines whether string is empty.
IsNotBlank determines whether string is not blank.
IsNotEmpty determines whether string is not empty.
ToBytes converts string to byte slice,can only be used in read-only.