[swift-users] Ugliness bridging Swift String to char *

[Kenny Leung]

Follow-up on this:

The StaticString solution doesn’t work:

let separator: StaticString = “|”
opt.fieldSep = UnsafeMutablePointer(mutating: separator.utf8start)

… because utf8start returns UnsafePointer<UInt8>, and fieldSep is actually UnsafeMutablePointer<Int8>. There doesn’t seem to be any way to convert UnsafePointer<Unit8> to UnsafePointer<Int8>.

cString(using:) works because it returns [CChar], which is the same as Int8.

-Kenny

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