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Quiz: Unidirectional Functional Associations

Take a short quiz on unidirectional functional associations.

We'll cover the following...

Technical Quiz

Consider the single-valued reference property Committee::chair, which holds a reference to an instance of the class ClubMember.

Which of the following JS code fragments represents the preferred implementation of the setter for this property?

set chair(c) {
  const clubMember_id = (typeof c !==  "object") ? c : c.memberId;
  this._chair = ClubMember.instances[clubMember_id];
}

set chair(c) {
  const clubMember_id = c.memberId;
  this._chair = ClubMember.instances[clubMember_id];
}

set chair(c) {
  const clubMember_id = c;
  this._chair = ClubMember.instances[clubMember_id];
}

set chair(c) {
  this._chair = c;
}

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Quiz: Unidirectional Functional Associations