docs.xsharp.it

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====== Namespaces ======

Namespaces are a possibility (that you should use, but not overuse!) to structure your classes.

A sample of working code:

Customer.Item.prg
<code visualfoxpro>begin namespace Customer

class Item

# Class code

end class

end namespace</code>

Supplier.Item.prg
<code visualfoxpro>begin namespace Supplier

class Item

# Class code

end class

end namespace</code>

and now how to use these classes:

<code visualfoxpro>local oCustomerItem as Customer.Item
local oSupplierItem as Supplier.Item

oCustomerItem := Customer.Item{}
oSupplierItem := Supplier.Item{}</code>

Please note that with the "using" statement you don't need to fully specify the class like in this code:
<code visualfoxpro>using Customer
local oItem as Item

oItem := oItem{}</code>
For the compiler, it must be clear which class to use, so if you have use classes that are defined multiple times in different namespaces, you need to fully qualify them. The following code will lead to a compiler warning:
<code visualfoxpro>using Customer
using Supplier

local oCustomerItem as Item

oCustomerItem := Item{}
</code>

because you need to specify which class to take. The compiler has no chance to do that correctly.