Member
Each instance of class Member
represents an individual person, recorded by an
(imaginary) society-membership app. A member has a number of basic attributes such
as a name and a year of birth.
Once created, a Member
object is immutable; to represent changes in a person,
one should create a new instance of the class.
- Value parameters:
- id
a number that uniquely identifies the member from other members of the society
- name
the member’s name
- yearOfBirth
the year the member was born
- yearOfDeath
the year the member died (wrapped in an
Option
;None
if the member is alive)
Value members
Concrete methods
Returns a Boolean value indicating whether the member is alive or not. That is,
returns true
if the member does not have a year of death,* and false
if they do.
Returns a Boolean value indicating whether the member is alive or not. That is,
returns true
if the member does not have a year of death,* and false
if they do.
Returns a compact string description of the member. The description of a dead person has
the form "Name(YoB-YoD)"
; e.g. "Elvis(1935-1977)"
. The description of a living person is
the same but with no year of death; e.g., "Madonna(1958-)"
.
Returns a compact string description of the member. The description of a dead person has
the form "Name(YoB-YoD)"
; e.g. "Elvis(1935-1977)"
. The description of a living person is
the same but with no year of death; e.g., "Madonna(1958-)"
.
- Definition Classes