初始化器
init(rebasing:)
在與給定原始緩衝區切片相同的內存上創建原始緩衝區,索引重新設置為零。
聲明
init(rebasing slice: Slice<UnsafeMutableRawBufferPointer>)
參數
slice
要變基的原始緩衝區切片。
詳述
新緩衝區表示與切片相同的內存區域,但其索引從零開始,而不是在原始緩衝區中切片的開頭。以下代碼創建 slice
,一個覆蓋現有緩衝區實例的一部分的切片,然後將其變基為新的 rebased
緩衝區。
let slice = buffer[n...]
let rebased = UnsafeRawBufferPointer(rebasing: slice)
執行此代碼後,以下情況屬實:
-
rebased.startIndex == 0
-
rebased[0] == slice[n]
-
rebased[0] == buffer[n]
-
rebased.count == slice.count
可用版本
iOS 8.0+, iPadOS 8.0+, macOS 10.10+, Mac Catalyst 13.0+, tvOS 9.0+, watchOS 2.0+
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注:本文由純淨天空篩選整理自apple.com大神的英文原創作品 UnsafeMutableRawBufferPointer init(rebasing:)。非經特殊聲明,原始代碼版權歸原作者所有,本譯文未經允許或授權,請勿轉載或複製。