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Set

​MDN​
Notes:
Use Set.add vs Map.set
Use Set.size vs Array.length
To remove/delete: use delete
Set Cloning
const new = new Set(old);
Or if enabled:
const new = ...old
Set Iteration
for (let value of set.values()) {
  ...
}
To Array
Array.from(new Set())
Differences
​https://github.com/aizatto/nodejs/blob/master/src/fn.js#L42​
function setMath<T>(a: Set<T>, b: Set<T>) {
  return {
    remove: [...a].filter(x => !b.has(x)),
    add: [...b].filter(x => !a.has(x)),
  };
}
​

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Notes:

Set Cloning

Set Iteration

To Array

Differences

Notes:

Set Cloning

Set Iteration

To Array

Differences

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