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digitalmars.D.learn - inout and methods which return "this"

reply "Vladimir Panteleev" <vladimir thecybershadow.net> writes:
What's the simplest const-correct way to write a method which returns  
"this"?

I tried the following to no avail:

class Test
{
	inout(Test) f() inout
	{
		return this;
	}
}

Result:

test.d(3): Error: inout on return means inout must be on a parameter as  
well for inout inout(Test)()

It seems to me that the compiler could check the method's constness along  
with that of its parameters, but doesn't (omission / unimplemented  
feature?)

-- 
Best regards,
  Vladimir                            mailto:vladimir thecybershadow.net
Sep 11 2011
next sibling parent Timon Gehr <timon.gehr gmx.ch> writes:
On 09/12/2011 03:48 AM, Vladimir Panteleev wrote:

 What's the simplest const-correct way to write a method which returns
 "this"?

 I tried the following to no avail:

 class Test
 {
 inout(Test) f() inout
 {
 return this;
 }
 }

 Result:

 test.d(3): Error: inout on return means inout must be on a parameter as
 well for inout inout(Test)()

 It seems to me that the compiler could check the method's constness
 along with that of its parameters, but doesn't (omission / unimplemented
 feature?)



Yes, afaik inout is not functional at the moment.
Sep 11 2011
prev sibling next sibling parent "Jonathan M Davis" <jmdavisProg gmx.com> writes:
On Monday, September 12, 2011 05:38:36 Timon Gehr wrote:

 Yes, afaik inout is not functional at the moment.



http://d.puremagic.com/issues/show_bug.cgi?id=3748

- Jonathan M Davis
Sep 12 2011
prev sibling parent "Steven Schveighoffer" <schveiguy yahoo.com> writes:
On Sun, 11 Sep 2011 21:48:36 -0400, Vladimir Panteleev  
<vladimir thecybershadow.net> wrote:


 What's the simplest const-correct way to write a method which returns  
 "this"?

 I tried the following to no avail:

 class Test
 {
 	inout(Test) f() inout
 	{
 		return this;
 	}
 }

 Result:

 test.d(3): Error: inout on return means inout must be on a parameter as  
 well for inout inout(Test)()

 It seems to me that the compiler could check the method's constness  
 along with that of its parameters, but doesn't (omission / unimplemented  
 feature?)



It's not correctly implemented.  When it is, the above will be correct.

-Steve
Sep 12 2011