# CFNumberFormatterGetValueFromString(_:_:_:_:_:) Returns a number or value representing a given string. ``` func CFNumberFormatterGetValueFromString(_ formatter: CFNumberFormatter!, _ string: CFString!, _ rangep: UnsafeMutablePointer!, _ numberType: CFNumberType, _ valuePtr: UnsafeMutableRawPointer!) -> Bool ``` ## Parameters `formatter` The number formatter to use. `string` The string to parse. `rangep` A reference to a range that specifies the substring of `string` to be parsed. If `NULL`, the whole string is parsed. Upon return, contains the range of the actual extent of the parse (may be less than the given range). `numberType` The type of value that `valuePtr` references. Valid values are listed in [`CFNumberType`](/documentation/CoreFoundation/CFNumberType). `valuePtr` Upon return, contains a number or value representing the string in the specified format. You are responsible for releasing this value. ## Return Value `true` if the string was parsed successfully, otherwise `false`. --- 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)