Declaration¶
Source position: fpexprpars.pp line 198
type
TFPEqualOperation = class(TFPBooleanResultOperation)
public
function AsString : AnsiString;
end;
Description¶
The TFPEqualOperation class implements the equality comparison operation (=) between two operands of compatible types. It extends TFPBooleanResultOperation to provide equality-specific comparison logic.
The operation compares two values and returns True if they are equal, False otherwise. It handles different data types appropriately, using numeric equality for numbers, string comparison for strings, and boolean comparison for boolean values.
Type conversion is performed when necessary to compare values of different but compatible types (e.g., comparing an integer with a float).
This class is used internally by the TFPExpressionParser class to construct an AST (Abstract Syntax Tree). There is normally no need for you to use or instantiate this class directly.
Methods¶
| Member | Visibility | Description |
|---|---|---|
| AsString | public | Get string representation of equality operation |
See also¶
| Name | Description |
|---|---|
| TFPExprNode | Class for representing nodes in expression trees |