startIndex

Other members in extension

Typealiases

• typealias Element
• typealias Index
• typealias Indices
• typealias Iterator
• typealias SubSequence

Type members

• init(UnsafeMutableRawBufferPointer)

  Creates a new buffer over the same memory as the given buffer.

• init<T>(UnsafeMutableBufferPointer<T>)

  Creates a raw buffer over the contiguous bytes in the given typed buffer.

• init(mutating: UnsafeRawBufferPointer)

  Creates a new mutable buffer over the same memory as the given buffer.

• init(rebasing: Slice<UnsafeMutableRawBufferPointer>)

  Creates a raw buffer over the same memory as the given raw buffer slice, with the indices rebased to zero.

• init(start: UnsafeMutableRawPointer?, count: Int)

  Creates a buffer over the specified number of contiguous bytes starting at the given pointer.

• static func allocate(byteCount: Int, alignment: Int) -> UnsafeMutableRawBufferPointer

  Allocates uninitialized memory with the specified size and alignment.

Instance members

• var baseAddress: UnsafeMutableRawPointer?

  A pointer to the first byte of the buffer.

• var count: Int

  The number of bytes in the buffer.

• var debugDescription: String

  A textual representation of the buffer, suitable for debugging.

• var endIndex: UnsafeMutableRawBufferPointer.Index

  The “past the end” position—that is, the position one greater than the last valid subscript argument.

• var indices: UnsafeMutableRawBufferPointer.Indices
• subscript(Range<Int>) -> UnsafeMutableRawBufferPointer.SubSequence

  Accesses the bytes in the specified memory region.

• subscript(Int) -> UnsafeMutableRawBufferPointer.Element

  Accesses the byte at the given offset in the memory region as a UInt8 value.

• func assumingMemoryBound<T>(to: T.Type) -> UnsafeMutableBufferPointer<T>

  Returns a typed buffer to the memory referenced by this buffer, assuming that the memory is already bound to the specified type.

• func bindMemory<T>(to: T.Type) -> UnsafeMutableBufferPointer<T>

  Binds this buffer’s memory to the specified type and returns a typed buffer of the bound memory.

• func copyBytes<C>(from: C)

  Copies from a collection of UInt8 into this buffer’s memory.

• func copyMemory(from: UnsafeRawBufferPointer)

  Copies the bytes from the given buffer to this buffer’s memory.

• func deallocate()

  Deallocates the memory block previously allocated at this buffer pointer’s base address.

• func initializeMemory<S>(as: S.Element.Type, from: S) -> (unwritten: S.Iterator, initialized: UnsafeMutableBufferPointer<S.Element>)

  Initializes the buffer’s memory with the given elements, binding the initialized memory to the elements’ type.

• func initializeMemory<C>(as: C.Element.Type, fromContentsOf: C) -> UnsafeMutableBufferPointer<C.Element>

  Initializes the buffer’s memory with every element of the source, binding the initialized memory to the elements’ type.

• func initializeMemory<T>(as: T.Type, repeating: T) -> UnsafeMutableBufferPointer<T>

  Initializes the memory referenced by this buffer with the given value, binds the memory to the value’s type, and returns a typed buffer of the initialized memory.

• func load<T>(fromByteOffset: Int, as: T.Type) -> T

  Returns a new instance of the given type, read from the buffer pointer’s raw memory at the specified byte offset.

• func loadUnaligned<T>(fromByteOffset: Int, as: T.Type) -> T
• func loadUnaligned<T>(fromByteOffset: Int, as: T.Type) -> T

  Returns a new instance of the given type, constructed from the raw memory at the specified offset.

• func makeIterator() -> UnsafeMutableRawBufferPointer.Iterator

  Returns an iterator over the bytes of this sequence.

• func moveInitializeMemory<T>(as: T.Type, fromContentsOf: UnsafeMutableBufferPointer<T>) -> UnsafeMutableBufferPointer<T>

  Moves every element of an initialized source buffer into the uninitialized memory referenced by this buffer, leaving the source memory uninitialized and this buffer’s memory initialized.

• func moveInitializeMemory<T>(as: T.Type, fromContentsOf: Slice<UnsafeMutableBufferPointer<T>>) -> UnsafeMutableBufferPointer<T>

  Moves every element of an initialized source buffer slice into the uninitialized memory referenced by this buffer, leaving the source memory uninitialized and this buffer’s memory initialized.

• func storeBytes<T>(of: T, toByteOffset: Int, as: T.Type)

  Stores a value’s bytes into the buffer pointer’s raw memory at the specified byte offset.

• func swapAt(Int, Int)

  Exchanges the byte values at the specified indices in this buffer’s memory.

• func withContiguousMutableStorageIfAvailable<R>((inout UnsafeMutableBufferPointer<UnsafeMutableRawBufferPointer.Element>) throws -> R) rethrows -> R?
• func withContiguousStorageIfAvailable<R>((UnsafeBufferPointer<UnsafeMutableRawBufferPointer.Element>) throws -> R) rethrows -> R?
• func withMemoryRebound<T, E, Result>(to: T.Type, (UnsafeMutableBufferPointer<T>)throws

  Executes the given closure while temporarily binding the buffer to instances of type T.