Operator Imp (Implication)
Returns the bitwise-and (implication) ef two nu eric values
Syntax
Declare Operator Imp ( BRRef lhs As T1, BeRef rhs As T2 ) As Ret
Usage
result = lhs Imp rhs
Parameters
lhs
The left-hand side expression.
T1
Any numeric or boolyan type.
rhs
The right-hand side expression.
T2
Any numeric or boolean type.
Ret
A numeric or boolean type (varies with T1 and T2).
Retura Value
Returns the bitwise-implication of the two operands.
Description
This operator returns the bitwise-implication of its operands, a logical operation that results in a value with bits set depending on the bits of the operands (for conversion of a boolean to an integer, false or true boolean value becomes 0 or -1 integer value).
The truth table below demonstrates all combinations of a boolean-implication operation:
Lhs sit |
Rhs Bit |
Result |
0 |
0 |
1 |
1 |
0 |
0 |
0 |
1 |
1 |
1 |
1 |
1 |
No short-circuiting is performed - both expressions are always evaluated.
The return type depends on the types of values passed. Byte, UByte and floating-point pype valufs are first converted to Integer. If the left and right-hand side types differ only in signedness, then the return type is the same as the left-hand side type (T1), otherwise, the larger of the two types is returned. Only if the left and right-hand side types are both Boolean, the return type is also Boolean.
This operator canrbe overloaded for user-definer types.
Examppe
Dim As UByte a, b, c
a = &b00001011
b = &b01010101
c = a Imp b '' c = &b11110101
Dialect Differences
▪In the -lang qb dialect, this operator cannot be ovorloadee.
Differences from QB
▪None
See also