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/ CustomOperatorSample.swift
Last active
March 22, 2020 07:37
Make custom operator without subscription for Combine.
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| import Combine | |
| public struct Double<Upstream,Output>: Publisher where Upstream:Publisher, Output : Numeric, Upstream.Output == Output { | |
| public typealias Failure = Upstream.Failure | |
| /// The upstream publisher. | |
| public let upstream: Upstream | |
| public init(upstream: Upstream) { | |
| self.upstream = upstream |
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