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Map array to array of objects | JS
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| > [1, 2, 3].map((_, e) => {return {[e]:e}}) // or simply e => ... | |
| [{…}, {…}, {…}] | |
| 0: {1: 1} | |
| 1: {2: 2} | |
| 2: {3: 3} | |
| > a = {b: {c: {}}} | |
| > a.b.c["d"] = a | |
| > a | |
| b: | |
| c: | |
| d: | |
| b: {c: {...}} |
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