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Check if a string is empty
Source position: syshelph.inc line 63
| public class function TStringHelper.IsNullOrEmpty( | 
| const AValue: string | 
| ):Boolean; | 
IsNullOrEmpty returns True if string A has length 0.
| 
 | Returns length of a string or array. | |
| 
 | Check if a string is empty or contains only whitespace characters. |