Operator Let() (Assignment)operator

Assigns fields of a user defined type to a list of variables

Operatorsoperatordocumented

Syntax

Let( variable1 [, variable2 [, ... ]] ) = UDT_var

Let( variable1 [, variable2 [, ... ]] ) => UDT_var

Parameters

Name		Description
`variable1 [, variable2 [, ... ]] Comma separated list of variables to receive the values of the UDT`		variable's fields.
`UDT_var`		A user defined type variable.

Description

Assigns the values from the UDT_var variable's fields to the list of variables.

When the UDT Extends a Base, the first variable (variable1) assigned by the operator then corresponds to a Base instance (only the other variables are those to receive the values of the data fields of the UDT).

Union is not supported.

Remarks

Dialect Differences

Only available in the -lang fb dialect.

Differences from QB

New to FreeBASIC

Example

Type Vector3D

    x As Double

    y As Double

    z As Double

End Type



Dim a As Vector3D = ( 5, 7, 9 )



Dim x As Double, y As Double



'' Get the first two fields only

Let( x, y ) = a



Print "x = "; x

Print "y = "; y

Output:

x =  5
y =  7

Type Parent

    Dim As Integer p1, p2

End Type



Type Child Extends Parent

    Dim As Integer c1, c2

End Type



Type GrandChild Extends Child

    Dim As Integer gc1, gc2

End Type



Dim As GrandChild gc = Type(1, 2, 3, 4, 5, 6)



Dim As Integer i1, i2

Dim As Integer j1, j2

Dim As Parent p

Dim As Child c



Let(c, i1, i2) = gc

Print c.p1, c.p2, c.c1, c.c2, i1, i2



Let(p, j1, j2) = gc

Print p.p1, p.p2, j1, j2