Operator -> (Pointer To Member Access)

FreeBASIC

Operator -> (Pointer To Member Access)
 
Returns a reference to a member from a pointer to an object

Syntax

Declare Operator -> ( ByRef lhs As T Ptr ) ByRef As U

Usage

result = lhs -> rhs

Parameters

lhs
The address of an object.
T
A user-defined type.
rhs
The name of a member to access.
U
The type that rhs refers to.

Return Value

Returns a reference to the member specified by rhs.

Description

Operator -> (Pointer to member access) returns a reference to a member of an object through a pointer to that object. It has the effect of dereferencing a pointer to an object, then using Operator . (Member Access). For example, "p->member" is equivalent to "x.member", if x is an object of user-defined type and p is a pointer to an object of the same type.

This operator can be overloaded for user-defined types.

Example


Type rect
    x As Integer
    y As Integer
End Type

Dim r As rect
Dim rp As rect Pointer = @r

rp->x = 4
rp->y = 2

Print "x = " & rp->x & ", y = " & rp->y
Sleep


Dialect Differences

  • Not available in the -lang qb dialect.

Differences from QB

  • New to FreeBASIC

See also