I wonder why the closure in the Array method
mutating func withUnsafeMutableBufferPointer<R>(_ body: (inout
UnsafeMutableBufferPointer<Array.Element>) throws -> R) rethrows -> R
takes an _inout_ parameter. The closure is called with a pointer to the
contiguous array storage, and I fail to imagine an example where it makes sense
to assign a new value to the parameter.
Any insights are welcome!
Regards, Martin
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