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January 30, 2020 08:29
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map() as transforming operator
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| ["1", "2", "w", "3"] | |
| .publisher.map { | |
| Int($0) | |
| } | |
| .sink { | |
| print($0) | |
| } | |
| // Output: | |
| //Optional(1) | |
| //Optional(2) | |
| //nil | |
| //Optional(3) |
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