assign_no_returnvalue
This is an old revision of the document!
Assign canot have a return value
VO unfortunately permits to return a value from an assign
. Since this is not permitted in .NET, the X# compiler will return an error of
[code]Warning XS9032 This entity type cannot return a value. Return value ignored.[/code]
The following code, perfectly valid in VO, will throw this warning in X#: [code]class MyClass
protect _cMyVar as string
assign MyVar( cMyVar ) class MyClass
_cMyVar := cMyVar return _cMyVar[/code]
It is recommended to type the access/assign pairs in VO, like this sample: [code]class MyClass
protect _cMyVar as string declare assign MyVar
assign MyVar( cMyVar as string ) as void pascal class MyClass
_cMyVar := cMyVar return _cMyVar[/code]
In this manner the compiler will you notify when you anywhere in your code have used the return value of the assign
statement. (other than giving you faster and more stable code)
assign_no_returnvalue.1528355480.txt.gz · Last modified: 2018/06/07 07:11 by wolfgangriedmann