> On Aug 17, 2017, at 8:20 PM, Xiaodi Wu via swift-evolution > <swift-evolution@swift.org> wrote: > > * stderr should go wherever stdin and stdout go. Since it’d be silly for a > function like `print(_:separator:terminator:)` or > `readLine(strippingNewline:)` to live anywhere but the standard library, then > it stands to reason that the stderr version should also live in the standard > library. > > FWIW, FileHandle.standardInput, FileHandle.standardError, > FileHandle.standardOutput, and FileHandle.nullDevice all live in Foundation.
And, since they're read-only, are fundamentally incompatible with `print(…to:)`, which requires its `output` parameter to be passed `inout`. -- Brent Royal-Gordon Architechies
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