[swift-evolution] Splat

[Brent Royal-Gordon]

> However, I’d be reticent to start using ! for safe operations like dereferencing a (guaranteed memory safe) pointer.

A pointer dereference can cause a segfault. Even if you assume it's not pointing to unallocated memory, UnsafePointers can be nil, at least in Swift 2.

(The lvalue thing Joe Groff mentioned is also a concern, but adding inout return values would fix that in principle.)

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Brent Royal-Gordon
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