Operator += (Add And Assign)

FreeBASIC

Operator += (Add And Assign)
 
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 )

Usage

lhs += rhs

Parameters

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.

Example

Dim n As Double
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