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Allow values to be returned from Shared.withLock #3154

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Jun 7, 2024
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Allow values to be returned from Shared.withLock #3154

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4 changes: 2 additions & 2 deletions Sources/ComposableArchitecture/SharedState/Shared.swift
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Original file line number Diff line number Diff line change
Expand Up @@ -67,8 +67,8 @@ public struct Shared<Value> {
}

/// Perform an operation on shared state with isolated access to the underlying value.
public func withLock(_ transform: @Sendable (inout Value) -> Void) {
transform(&self._wrappedValue)
public func withLock<R>(_ transform: @Sendable (inout Value) throws -> R) rethrows -> R {
try transform(&self._wrappedValue)
}

/// The underlying value referenced by the shared variable.
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