Created
January 13, 2020 14:51
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| var song1 = { | |
| title: 'Love has no rollback', | |
| author: 'SQL' | |
| } | |
| var songs = new WeakSet ([song1]); | |
| console.log (songs); | |
| // WeakSet {Object {title: "Love has no rollback", author: "SQL"}} |
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