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Operator += (Add And Assign)operator
Adds and assigns a value to a variable
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 )Parameters
| Name | Description | |
|---|---|---|
lhs | The variable to assign to. | |
T1 | Any numeric type. | |
rhs | The value to add to | |
lhs | . | |
T2 | Any numeric type. | |
T | Any 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 as a member
Operator using the appropriate syntax.Note: Similarly to the operator '=[>]' (assign), the alternative symbol '+=>' can be also used.
Remarks
Usage
lhs += rhs
Dialect Differences
- In the -lang qb dialect, this operator cannot be overloaded.
Differences from QB
- New to FreeBASIC
See also
Example
Dim n As Double
n = 6
n += 1
Print n
Sleep
Output:
7
Reference
- Documented in KeyPgOpCombineAdd.html