• Ant^2i (8/8) May 31 2005 I try to learn D by doing stl-like templates. Anyway I have some little
• Derek Parnell (11/20) May 31 2005 What symbol would be the 'Apply' one? Are you thinking that the '='
• Jarrett Billingsley (4/8) May 31 2005 It would be called opAssign, the equivalent of operator=() in C++, and n...
• Derek Parnell (6/16) May 31 2005 Except the ones he's built into the language ;-)
• Stewart Gordon (13/22) Jun 02 2005 opApply is used to support foreach on a container class.

Ant^2i <Ant^2i_member pathlink.com> writes:

I try to learn D by doing stl-like templates. Anyway I have some little
problems.

1. I noticed that there is not yet (opApply?) assignment operator, or is there?.

2. Should opCmp work like c's strcmp?

3. 
i = a[3..4];	// same as i = a.opSlice(3,4);
But is there operator for this one:
a[3..4]=i; // same as a.opSliceAssing(i,3,4); ???

Derek Parnell <derek psych.ward> writes:

On Tue, 31 May 2005 11:44:39 +0000 (UTC), Ant^2i wrote:

 I try to learn D by doing stl-like templates. Anyway I have some little
 problems.
 
 1. I noticed that there is not yet (opApply?) assignment operator, or is
there?.

What symbol would be the 'Apply' one? Are you thinking that the '='
(assignment) operator might be overloaded by opApply?

 2. Should opCmp work like c's strcmp?

In so far as it is supposed to return  '< 0' if the first parameter is less
than the second parameter, zero if they are equal value, and '> 0' if the
first is greater than the second.

 3. 
 i = a[3..4];	// same as i = a.opSlice(3,4);
 But is there operator for this one:
 a[3..4]=i; // same as a.opSliceAssing(i,3,4); ???

I don't think so. 

-- 
Derek Parnell
Melbourne, Australia
31/05/2005 10:51:53 PM

"Jarrett Billingsley" <kb3ctd2 yahoo.com> writes:

"Ant^2i" <Ant^2i_member pathlink.com> wrote in message 
news:d7hin7$1i3h$1 digitaldaemon.com...
I try to learn D by doing stl-like templates. Anyway I have some little
 problems.

 1. I noticed that there is not yet (opApply?) assignment operator, or is 
 there?.

It would be called opAssign, the equivalent of operator=() in C++, and no, 
it can't be overridden.  You see, Walter doesn't like implicit casts. 

Derek Parnell <derek psych.ward> writes:

On Tue, 31 May 2005 18:29:53 -0400, Jarrett Billingsley wrote:

 "Ant^2i" <Ant^2i_member pathlink.com> wrote in message 
 news:d7hin7$1i3h$1 digitaldaemon.com...
I try to learn D by doing stl-like templates. Anyway I have some little
 problems.

 1. I noticed that there is not yet (opApply?) assignment operator, or is 
 there?.

 
 It would be called opAssign, the equivalent of operator=() in C++, and no, 
 it can't be overridden.  You see, Walter doesn't like implicit casts.

Except the ones he's built into the language ;-)

-- 
Derek
Melbourne, Australia
1/06/2005 9:28:03 AM

Stewart Gordon <smjg_1998 yahoo.com> writes:

Ant^2i wrote:
 I try to learn D by doing stl-like templates. Anyway I have some little
 problems.
 
 1. I noticed that there is not yet (opApply?) assignment operator, or is
there?.

opApply is used to support foreach on a container class.

Of course there's an assignment operator.  Just no means of overloading 
it.  Partly because Walter doesn't like the idea and partly because the 
way D works means that it isn't really necessary.

http://www.digitalmars.com/d/faq.html#assignmentoverloading

 2. Should opCmp work like c's strcmp?

Yes.

 3. 
 i = a[3..4];	// same as i = a.opSlice(3,4);
 But is there operator for this one:
 a[3..4]=i; // same as a.opSliceAssing(i,3,4); ???

No.  Slice assignment isn't currently supported, but when we eventually 
have it, it should be opSliceAssign.

Stewart.

-- 
My e-mail is valid but not my primary mailbox.  Please keep replies on 
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