# CFStringGetCharacterFromInlineBuffer(_:_:) Returns the Unicode character at a specific location in an in-line buffer. ``` func CFStringGetCharacterFromInlineBuffer(_ buf: UnsafeMutablePointer!, _ idx: CFIndex) -> UniChar ``` ## Parameters `buf` The initialized CFStringInlineBuffer structure in which the characters are stored. You should initialize the structure with the [`CFStringInitInlineBuffer(_:_:_:)`](/documentation/CoreFoundation/CFStringInitInlineBuffer(_:_:_:)) function. `idx` The location of a character in the in-line buffer `buf`. This index is relative to the range specified when `buf` was created. ## Return Value A Unicode character, or `0` if a location outside the original range is specified. ## Discussion This function accesses one of the characters of a string written to an in-line buffer. It is typically called from within a loop to access each character in the buffer in sequence. You should initialize the buffer with the [`CFStringInitInlineBuffer(_:_:_:)`](/documentation/CoreFoundation/CFStringInitInlineBuffer(_:_:_:)) function. The in-line buffer functions, along with the [`CFStringInlineBuffer`](/documentation/CoreFoundation/CFStringInlineBuffer) structure, give you fast access to the characters of a CFString object. The technique for in-line buffer access combines the convenience of one-at-a-time character access with the efficiency of bulk access. --- Copyright © 2026 Apple Inc. All rights reserved. | [Terms of Use](https://www.apple.com/legal/internet-services/terms/site.html) | [Privacy Policy](https://www.apple.com/privacy/privacy-policy)