Invokes the given closure with a mutable buffer pointer covering the raw
bytes of the given argument.
The buffer pointer argument to the body closure provides a collection
interface to the raw bytes of arg. The buffer is the size of the
instance passed as arg and does not include any remote storage.
Parameters:arg: An instance to temporarily access through a mutable raw buffer
pointer.
body: A closure that takes a raw buffer pointer to the bytes of arg
as its sole argument. If the closure has a return value, it is used as
the return value of the withUnsafeMutableBytes(of:_:) function. The
buffer pointer argument is valid only for the duration of the
closure's execution.
Returns: The return value of the body closure, if any.
See Also:withUnsafeMutablePointer(to:_:), withUnsafeBytes(of:_:)
Invokes the given closure with a mutable buffer pointer covering the raw bytes of the given argument.
The buffer pointer argument to the
bodyclosure provides a collection interface to the raw bytes ofarg. The buffer is the size of the instance passed asargand does not include any remote storage.Parameters: arg: An instance to temporarily access through a mutable raw buffer pointer. body: A closure that takes a raw buffer pointer to the bytes of
argas its sole argument. If the closure has a return value, it is used as the return value of thewithUnsafeMutableBytes(of:_:)function. The buffer pointer argument is valid only for the duration of the closure's execution. Returns: The return value of thebodyclosure, if any.See Also:
withUnsafeMutablePointer(to:_:),withUnsafeBytes(of:_:)Declaration
funcwithUnsafeMutableBytes<T,Result>(ofarg:inoutT,_body: (UnsafeMutableRawBufferPointer)throws->Result)rethrows->Result