iOS and MacOS Swift Compiler errors

[klipsedeville]

I am getting build errors when trying to build for iOS and MacOS. Works great on android. See the errors below. My xcode swift compiler version is set to 5.

Launching lib/main.dart on iPhone 13 in debug mode... Xcode build done. 16.4s Failed to build iOS app Uncategorized (Xcode): Command CompileSwift failed with a nonzero exit code Swift Compiler Error (Xcode): Constrained extension must be declared on the unspecialized generic type 'Array' with constraints specified by a 'where' clause /Users/ikenna/.pub-cache/hosted/pub.dev/bluetooth_low_energy_darwin-5.0.3/darwin/Classes/MyApi.swift:19:0 Swift Compiler Error (Xcode): Constrained extension must be declared on the unspecialized generic type 'Dictionary' with constraints specified by a 'where' clause /Users/ikenna/.pub-cache/hosted/pub.dev/bluetooth_low_energy_darwin-5.0.3/darwin/Classes/MyApi.swift:214:0

Swift Compiler Error (Xcode): Type 'Element' has no member 'read' /Users/ikenna/.pub-cache/hosted/pub.dev/bluetooth_low_energy_darwin-5.0.3/darwin/Classes/MyApi.swift:24:18

Swift Compiler Error (Xcode): Type 'Element' has no member 'write' /Users/ikenna/.pub-cache/hosted/pub.dev/bluetooth_low_energy_darwin-5.0.3/darwin/Classes/MyApi.swift:26:18

Swift Compiler Error (Xcode): Type 'Element' has no member 'writeWithoutResponse' /Users/ikenna/.pub-cache/hosted/pub.dev/bluetooth_low_energy_darwin-5.0.3/darwin/Classes/MyApi.swift:28:18 Swift Compiler Error (Xcode): Type 'Element' has no member 'notify' /Users/ikenna/.pub-cache/hosted/pub.dev/bluetooth_low_energy_darwin-5.0.3/darwin/Classes/MyApi.swift:30:18

Swift Compiler Error (Xcode): Type 'Element' has no member 'indicate' /Users/ikenna/.pub-cache/hosted/pub.dev/bluetooth_low_energy_darwin-5.0.3/darwin/Classes/MyApi.swift:32:18

Swift Compiler Error (Xcode): Type 'Element' has no member 'read' /Users/ikenna/.pub-cache/hosted/pub.dev/bluetooth_low_energy_darwin-5.0.3/darwin/Classes/MyApi.swift:43:18

Swift Compiler Error (Xcode): Type 'Element' has no member 'write' /Users/ikenna/.pub-cache/hosted/pub.dev/bluetooth_low_energy_darwin-5.0.3/darwin/Classes/MyApi.swift:45:18 Swift Compiler Error (Xcode): Type 'Element' has no member 'writeWithoutResponse' /Users/ikenna/.pub-cache/hosted/pub.dev/bluetooth_low_energy_darwin-5.0.3/darwin/Classes/MyApi.swift:45:26

Swift Compiler Error (Xcode): No exact matches in call to subscript /Users/ikenna/.pub-cache/hosted/pub.dev/bluetooth_low_energy_darwin-5.0.3/darwin/Classes/MyApi.swift:216:27

Swift Compiler Error (Xcode): No exact matches in call to subscript /Users/ikenna/.pub-cache/hosted/pub.dev/bluetooth_low_energy_darwin-5.0.3/darwin/Classes/MyApi.swift:217:31 Swift Compiler Error (Xcode): No exact matches in call to subscript /Users/ikenna/.pub-cache/hosted/pub.dev/bluetooth_low_energy_darwin-5.0.3/darwin/Classes/MyApi.swift:219:30

Swift Compiler Error (Xcode): Unable to infer complex closure return type; add explicit type to disambiguate /Users/ikenna/.pub-cache/hosted/pub.dev/bluetooth_low_energy_darwin-5.0.3/darwin/Classes/MyApi.swift:220:59 Swift Compiler Error (Xcode): No exact matches in call to subscript /Users/ikenna/.pub-cache/hosted/pub.dev/bluetooth_low_energy_darwin-5.0.3/darwin/Classes/MyApi.swift:226:43 Swift Compiler Error (Xcode): Cannot convert return expression of type '[Int64 : CBService]' to return type 'String?' /Users/ikenna/.pub-cache/hosted/pub.dev/bluetooth_low_energy_darwin-5.0.3/darwin/Classes/MyCentralManager.swift:391:23

Swift Compiler Error (Xcode): 'flatMap' has been renamed to 'compactMap(:)': Please use compactMap(:) for the case where closure returns an optional value /Users/ikenna/.pub-cache/hosted/pub.dev/bluetooth_low_energy_darwin-5.0.3/darwin/Classes/MyCentralManager.swift:389:34 Swift Compiler Error (Xcode): Type of expression is ambiguous without more context /Users/ikenna/.pub-cache/hosted/pub.dev/bluetooth_low_energy_darwin-5.0.3/darwin/Classes/MyCentralManager.swift:393:32

Swift Compiler Error (Xcode): Cannot convert return expression of type '[Int64 : CBCharacteristic]' to return type 'String?' /Users/ikenna/.pub-cache/hosted/pub.dev/bluetooth_low_energydarwin-5.0.3/darwin/Classes/MyCentralManager.swift:411:23 Swift Compiler Error (Xcode): 'flatMap' has been renamed to 'compactMap(:)': Please use compactMap(_:) for the case where closure returns an optional value /Users/ikenna/.pub-cache/hosted/pub.dev/bluetooth_low_energy_darwin-5.0.3/darwin/Classes/MyCentralManager.swift:409:41

Swift Compiler Error (Xcode): Type of expression is ambiguous without more context /Users/ikenna/.pub-cache/hosted/pub.dev/bluetooth_low_energy_darwin-5.0.3/darwin/Classes/MyCentralManager.swift:413:53 Swift Compiler Error (Xcode): Cannot convert return expression of type '[Int64 : CBDescriptor]' to return type 'String?' /Users/ikenna/.pub-cache/hosted/pub.dev/bluetooth_low_energy_darwin-5.0.3/darwin/Classes/MyCentralManager.swift:431:23

Swift Compiler Error (Xcode): 'flatMap' has been renamed to 'compactMap(:)': Please use compactMap(:) for the case where closure returns an optional value /Users/ikenna/.pub-cache/hosted/pub.dev/bluetooth_low_energy_darwin-5.0.3/darwin/Classes/MyCentralManager.swift:429:37 Swift Compiler Error (Xcode): Type of expression is ambiguous without more context /Users/ikenna/.pub-cache/hosted/pub.dev/bluetooth_low_energy_darwin-5.0.3/darwin/Classes/MyCentralManager.swift:433:49

Swift Compiler Error (Xcode): Unable to infer complex closure return type; add explicit type to disambiguate /Users/ikenna/.pub-cache/hosted/pub.dev/bluetooth_low_energy_darwin-5.0.3/darwin/Classes/MyPeripheralManager.swift:184:46 Could not build the application for the simulator. Error launching application on iPhone 13. Exited

[klipsedeville]

My Xcode version is 13.2.1 on BigSur OS

[yanshouwang]

@klipsedeville I think you can fix this by upgrade swift version to 5.7 or above I used the latest Xcode when develope this plugin, so there maybe exist some syntax errors when build with old version Xcode.

See: https://github.com/apple/swift-evolution/blob/main/proposals/0361-bound-generic-extensions.md

[klipsedeville]

@klipsedeville I think you can fix this by upgrade swift version to 5.7 or above I used the latest Xcode when develope this plugin, so there maybe exist some syntax errors when build with old version Xcode.

See: https://github.com/apple/swift-evolution/blob/main/proposals/0361-bound-generic-extensions.md

Thanks so much for replying. I will upgrade swift and see if the errors go away.

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