linux - 如何在 Swift for Linux 中读取用户输入或标准输入？

Question

如何在 Swift for Linux 中读取用户输入或来自标准输入的字符流？

Answer 1

readLine()适用于 Ubuntu 15:

[Readline] Returns Characters read from standard input through the end of the current line or until EOF is reached, or nil if EOF has already been reached.

例子:

print("\nEnter your name:\n")
if let name = readLine() {
    print("\nHello \(name)!\n")
}

ed@swiftux:~/Swift/Scripts$ ./testReadline

Enter your name:

Eric

Hello Eric!

readline() 也适用于 |(管道):

ed@swiftux:~/Swift/Scripts$ echo "Mike" | ./testReadline

Enter your name:

Hello Mike!

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我也尝试过 NSFileHandle 的经典方式但尚未实现:

fatal error: availableData is not yet implemented: file Foundation/NSObjCRuntime.swift