System.Character.IsNumber
Delphi
function IsNumber(C: Char): Boolean;
function IsNumber(C: UCS4Char): Boolean;
function IsNumber(const S: string; Index: Integer): Boolean;
C++
extern DELPHI_PACKAGE bool __fastcall IsNumber(System::WideChar C)/* overload */;
Properties
| Type | Visibility | Source | Unit | Parent |
|---|---|---|---|---|
| function | public | System.Character.pas System.Character.hpp |
System.Character | System.Character |
Description
Warning: IsNumber is deprecated. Please use TCharHelper.IsNumber.
Determines whether a UTF-16 character is defined as a number in the Unicode specifications.
Returns true if the UTF-16 character is defined as a number in the Unicode specifications.
For the definition of Digit and its relationship to Number, see: http://www.unicode.org/versions/Unicode5.2.0/ch04.pdf#G124206, The Unicode Standard, Version 5.2
See Also