On Fri, 30 Mar 2012 02:42:03 -0400, Walter Bright
<[email protected]> wrote:
On 3/29/2012 6:57 PM, Nick Sabalausky wrote:
How the heck does that improve encapsualtion? With D's implicit
friends, it
*doesn't*, it's just shifting things around. There is NO encapsualtion
benefit there. Like Steven said, to *get* the encapsualtion, you have to
create a whole new module to stick "extraFunctionality" into.
It doesn't improve intra-module encapsulation, you're right. The point
of UFCS, however, is so that *other* modules can extend a class's
methods without breaking encapsulation.
This is misleading, the class being extended or the code that uses the
extensions must import the extension methods or it doesn't work.
The OP to this sub-thread brought up your example in the article -- adding
range functions to a class. Yes, you can do it, but it won't work with
std.algorithm. There's no need to test this, because it fundamentally
cannot work that way (see my counter-case).
-Steve
