Swift编译器使版本2和版本3令人困惑 [英] Swift compiler is confusing version 2 and 3

问题描述

我在项目中安装了一个cocoapod，并在其上运行了转换器，以将其转换为Swift 3.

I installed a cocoapod to a project and ran the converter on it to change it over to Swift 3.

问题是编译器认为我正在使用Swift 2，并且在正确的Swift 3语法上引发错误(高达129个错误).例如:

The issue is the compiler thinks that I am using Swift 2, and is throwing errors on proper Swift 3 syntax (a whopping 129 errors). For example:

internal enum Error: ErrorProtocol {
    case noCentralManagerSet
    case busy
    case interrupted
}

抛出use of undeclared type 'ErrorProtocol'.

怎么了?

我编写的Swift 3代码不是会引发编译器错误.

The Swift 3 code that I wrote is not throwing compiler errors.

这是xcodebuild -showsdks的输出:

2016-07-01 14:16:05.850 xcodebuild[30824:2848916] [MT] PluginLoading: Required plug-in compatibility UUID 1637F4D5-0B27-416B-A78D-498965D64877 for plug-in at path '~/Library/Application Support/Developer/Shared/Xcode/Plug-ins/WebDevSupport.xcplugin' not present in DVTPlugInCompatibilityUUIDs
2016-07-01 14:16:05.864 xcodebuild[30824:2848916] [MT] PluginLoading: Required plug-in compatibility UUID 1637F4D5-0B27-416B-A78D-498965D64877 for plug-in at path '~/Library/Application Support/Developer/Shared/Xcode/Plug-ins/WebDevelopment.xcplugin' not present in DVTPlugInCompatibilityUUIDs
2016-07-01 14:16:05.911 xcodebuild[30824:2848916] [MT] PluginLoading: Required plug-in compatibility UUID 1637F4D5-0B27-416B-A78D-498965D64877 for plug-in at path '~/Library/Application Support/Developer/Shared/Xcode/Plug-ins/WakaTime.xcplugin' not present in DVTPlugInCompatibilityUUIDs
2016-07-01 14:16:05.944 xcodebuild[30824:2848916] [MT] PluginLoading: Required plug-in compatibility UUID 1637F4D5-0B27-416B-A78D-498965D64877 for plug-in at path '~/Library/Application Support/Developer/Shared/Xcode/Plug-ins/Rayrolling.xcplugin' not present in DVTPlugInCompatibilityUUIDs
2016-07-01 14:16:05.967 xcodebuild[30824:2848916] [MT] PluginLoading: Required plug-in compatibility UUID 1637F4D5-0B27-416B-A78D-498965D64877 for plug-in at path '~/Library/Application Support/Developer/Shared/Xcode/Plug-ins/CocoaPods.xcplugin' not present in DVTPlugInCompatibilityUUIDs
2016-07-01 14:16:05.997 xcodebuild[30824:2848916] [MT] PluginLoading: Required plug-in compatibility UUID 1637F4D5-0B27-416B-A78D-498965D64877 for plug-in at path '~/Library/Application Support/Developer/Shared/Xcode/Plug-ins/Alcatraz.xcplugin' not present in DVTPlugInCompatibilityUUIDs
OS X SDKs:
    OS X 10.12                      -sdk macosx10.12

iOS SDKs:
    iOS 10.0                        -sdk iphoneos10.0

iOS Simulator SDKs:
    Simulator - iOS 10.0            -sdk iphonesimulator10.0

tvOS SDKs:
    tvOS 10.0                       -sdk appletvos10.0

tvOS Simulator SDKs:
    Simulator - tvOS 10.0           -sdk appletvsimulator10.0

watchOS SDKs:
    watchOS 3.0                     -sdk watchos3.0

watchOS Simulator SDKs:
    Simulator - watchOS 3.0         -sdk watchsimulator3.0

推荐答案

您可以为每个目标设置Swift版本:

You can set Swift version for every target:

您的项目可能已设置为Yes.

Your project got probably set to Yes.

SDK不参与编译过程.

The SDK has no part in the compilation process.

这篇关于Swift编译器使版本2和版本3令人困惑的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！