Operator = (Equal)operator

Compares two expressions for equality

Operatorsoperatordocumented

Syntax

Declare Operator = ( ByRef lhs As Byte, ByRef rhs As Byte ) As Integer

Declare Operator = ( ByRef lhs As UByte, ByRef rhs As UByte ) As Integer

Declare Operator = ( ByRef lhs As Short, ByRef rhs As Short ) As Integer

Declare Operator = ( ByRef lhs As UShort, ByRef rhs As UShort ) As Integer

Declare Operator = ( ByRef lhs As Integer, ByRef rhs As Integer ) As Integer

Declare Operator = ( ByRef lhs As UInteger, ByRef rhs As UInteger ) As Integer

Declare Operator = ( ByRef lhs As LongInt, ByRef rhs As LongInt ) As Integer

Declare Operator = ( ByRef lhs As ULongInt, ByRef rhs As ULongInt ) As Integer

Parameters

Name		Description
`lhs`		The left-hand side expression to compare to.
`rhs`		The right-hand side expression to compare to.
`T`		Any pointer type.

Return value

Returns negative one (-1) if expressions are equal, or zero (0) if unequal.

Description

Operator = (Equality) is a binary operator that compares two expressions for equality and returns the result - a boolean value mainly in the form of an Integer: negative one (-1) for true and zero (0) for false. Only if the left and right-hand side types are both Boolean, the return type is also Boolean. The arguments are not modified in any way.

This operator can be overloaded to accept user-defined types as well.

Operator = (Equality) should not be confused with initializations or assignments, both of which also use the "=" symbol.

Remarks

Usage



result = lhs = rhs

Dialect Differences

In the -lang qb dialect, this operator cannot be overloaded.

Differences from QB

none

Example

Dim i As Integer = 0    '' initialization: initialise i with a value of 0

i = 420                 '' assignment: assign to i the value of 420



If (i = 69) Then        '' equation: compare the equality of the value of i and 69

    Print "serious error: i should equal 420"

    End -1

End If

Operator <> (Inequality) is complement to Operator = (Equality), and is functionally identical when combined with Operator Not (Bit-wise Complement).

If (420 = 420) Then Print "(420 = 420) is true."

   If Not (69 <> 69) Then Print "not (69 <> 69) is true."

Reference

Documented in KeyPgOpEqual.html