Feature value type
Feature value type
Returns true if this feature value is non empty and contains the specified value $v.
Returns true if this feature value is non empty and contains the specified value $v. Otherwise, returns false.
value to test
Extract email domain
Extract email domain
if email is invalid or empty - None is returned; otherwise some value with domain
Indicates whether some other object is "equal to" this one
Indicates whether some other object is "equal to" this one
Returns true if this feature value is non empty and the predicate $p returns true when applied to this feature type value.
Returns true if this feature value is non empty and the predicate $p returns true when applied to this feature type value. Otherwise, returns false.
the predicate to test
Returns a hash code value for the value
Returns a hash code value for the value
Returns true is the value is empty, false otherwise
Returns true is the value is empty, false otherwise
Returns true is the value is nullable, false otherwise
Returns true is the value is nullable, false otherwise
Returns true is the value is non empty, false otherwise
Returns true is the value is non empty, false otherwise
Extract email prefix
Extract email prefix
if email is invalid or empty - None is returned; otherwise some value with prefix
Returns a string representation of this value
Returns a string representation of this value
Returns value shortcut
Returns value shortcut
text value
text value
Email value representation