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Refactor logic to present Tab Preview when mouse moving on Tabs and n…
…ot on hovering
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DuckDuckGo/Common/Extensions/Publishers.withLatestFrom.swift
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,67 @@ | ||
| // | ||
| // Publishers.withLatestFrom.swift | ||
| // | ||
| // Copyright © 2024 DuckDuckGo. All rights reserved. | ||
| // | ||
| // Licensed under the Apache License, Version 2.0 (the "License"); | ||
| // you may not use this file except in compliance with the License. | ||
| // You may obtain a copy of the License at | ||
| // | ||
| // http://www.apache.org/licenses/LICENSE-2.0 | ||
| // | ||
| // Unless required by applicable law or agreed to in writing, software | ||
| // distributed under the License is distributed on an "AS IS" BASIS, | ||
| // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | ||
| // See the License for the specific language governing permissions and | ||
| // limitations under the License. | ||
| // | ||
|
|
||
| import Foundation | ||
| import Combine | ||
|
|
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| // More Info: | ||
| // - RXMarbles: https://rxmarbles.com/#withLatestFrom | ||
| // - https://jasdev.me/notes/with-latest-from | ||
| extension Publisher { | ||
|
|
||
| /// Upon an emission from self, emit the latest value from the | ||
| /// second publisher, if any exists. | ||
| /// | ||
| /// - parameter other: A second publisher source. | ||
| /// | ||
| /// - returns: A publisher containing the latest value from the second publisher, if any. | ||
| func withLatestFrom<Other: Publisher>( | ||
| _ other: Other | ||
| ) -> AnyPublisher<Other.Output, Other.Failure> where Failure == Other.Failure { | ||
| withLatestFrom(other) { _, otherValue in otherValue } | ||
| } | ||
|
|
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| /// Merges two publishers into a single publisher by combining each value | ||
| /// from self with the latest value from the second publisher, if any. | ||
| /// | ||
| /// - parameter other: A second publisher source. | ||
| /// - parameter resultSelector: Function to invoke for each value from the self combined | ||
| /// with the latest value from the second source, if any. | ||
| /// | ||
| /// - returns: A publisher containing the result of combining each value of the self | ||
| /// with the latest value from the second publisher, if any, using the | ||
| /// specified result selector function. | ||
| func withLatestFrom<Other: Publisher, Result>( | ||
| _ other: Other, | ||
| resultSelector: @escaping (Output, Other.Output) -> Result | ||
| ) -> AnyPublisher<Result, Failure> where Other.Failure == Failure { | ||
| let upstream = share() | ||
|
|
||
| return other | ||
| .map { second in | ||
| upstream.map { | ||
| resultSelector($0, second) | ||
| } | ||
| } | ||
| .switchToLatest() | ||
| .zip(upstream) // `zip`ping and discarding `\.1` allows for upstream completions to be projected down immediately. | ||
| .map(\.0) | ||
| .eraseToAnyPublisher() | ||
| } | ||
|
|
||
| } |
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