Operator += (Add And Assign)
Adds and assigns a value to a variable
Declare Operator += ( ByRef lhs As T1, ByRef rhs As T2 )
Declare Operator += ( ByRef lhs As T Ptr, ByRef rhs As Integer )
Declare Operator += ( ByRef lhs As String, ByRef rhs As String )
Declare Operator += ( ByRef lhs As WString, ByRef rhs As WString )
lhs += rhs
lhs
This operator adds and assigns a value to a variable. It is functionally equivalent to:
For numeric types, the right-hand side expression (rhs) will be converted to the left-hand side type (T1).
For string types, this operator is functionally equivalent to Operator &= (Concatenate And Assign).
This operator can be overloaded for user-defined types.
Output:
Syntax
Declare Operator += ( ByRef lhs As T1, ByRef rhs As T2 )
Declare Operator += ( ByRef lhs As T Ptr, ByRef rhs As Integer )
Declare Operator += ( ByRef lhs As String, ByRef rhs As String )
Declare Operator += ( ByRef lhs As WString, ByRef rhs As WString )
Usage
lhs += rhs
Parameters
lhs
The variable to assign to.
T1Any numeric type.
rhsThe value to add to lhs.
T2Any numeric type.
TAny data type.
Description
This operator adds and assigns a value to a variable. It is functionally equivalent to:
lhs = lhs + rhs
For numeric types, the right-hand side expression (rhs) will be converted to the left-hand side type (T1).
For string types, this operator is functionally equivalent to Operator &= (Concatenate And Assign).
This operator can be overloaded for user-defined types.
Example
Dim n As Double
n = 6
n += 1
Print n
Sleep
n = 6
n += 1
Print n
Sleep
Output:
7
Dialect Differences
- In the -lang qb dialect, this operator cannot be overloaded.
Differences from QB
- New to FreeBASIC
See also
