use array or vector

[Daniel]

I need to use arrays that I can dimension during runtime. Is there a way to
do that in VC++ .NET using arrays, or would I need to use vectors instead?

Daniel

[David Wilkinson]

Re: use array or vector

Daniel wrote:

I need to use arrays that I can dimension during runtime. Is there a way to
do that in VC++ .NET using arrays, or would I need to use vectors instead?

Daniel:

If this is a question about standard C++, you should have asked it in
microsoft.publi c.vc.language.

And the answer would have been: use std::vector.

--
David Wilkinson
Visual C++ MVP

[=?UTF-8?B?RmVybmFuZG8gR8OzbWV6?=]

Re: use array or vector

David Wilkinson wrote:

Daniel wrote:

>I need to use arrays that I can dimension during runtime. Is there a
>way to do that in VC++ .NET using arrays, or would I need to use
>vectors instead?

>
Daniel:
>
If this is a question about standard C++, you should have asked it in
microsoft.publi c.vc.language.
>
And the answer would have been: use std::vector.
>

Or perhaps CArray (well, the OP didn't specify the library he was
using). Or something from System::Collect ions.

Regards.

[Daniel]

Re: use array or vector

What does OP stand for?

Daniel

"Fernando Gómez" <fernando.a.gom ez.f@gmail.comw rote in message
news:OnRJRE25IH A.1468@TK2MSFTN GP05.phx.gbl...

David Wilkinson wrote:

>Daniel wrote:

>>I need to use arrays that I can dimension during runtime. Is there a
>>way to do that in VC++ .NET using arrays, or would I need to use vectors
>>instead?

>>
>Daniel:
>>
>If this is a question about standard C++, you should have asked it in
>microsoft.publ ic.vc.language.
>>
>And the answer would have been: use std::vector.
>>

>
Or perhaps CArray (well, the OP didn't specify the library he was using).
Or something from System::Collect ions.
>
Regards.
>

[Daniel]

Re: use array or vector

I wanted to use an object from the newer .NET namespace.

Daniel

"David Wilkinson" <no-reply@effisols. comwrote in message
news:us7eBt15IH A.3480@TK2MSFTN GP03.phx.gbl...

Daniel wrote:

>I need to use arrays that I can dimension during runtime. Is there a way
>to do that in VC++ .NET using arrays, or would I need to use vectors
>instead?

>
Daniel:
>
If this is a question about standard C++, you should have asked it in
microsoft.publi c.vc.language.
>
And the answer would have been: use std::vector.
>
--
David Wilkinson
Visual C++ MVP

[Daniel]

Re: use array or vector

If I use std::vector, would my code still be portable to other .NET runtimes
on top of other platforms?

Daniel

"David Wilkinson" <no-reply@effisols. comwrote in message
news:us7eBt15IH A.3480@TK2MSFTN GP03.phx.gbl...

Daniel wrote:

>I need to use arrays that I can dimension during runtime. Is there a way
>to do that in VC++ .NET using arrays, or would I need to use vectors
>instead?

>
Daniel:
>
If this is a question about standard C++, you should have asked it in
microsoft.publi c.vc.language.
>
And the answer would have been: use std::vector.
>
--
David Wilkinson
Visual C++ MVP

[=?ISO-8859-1?Q?Fernando_G=F3mez?=]

Re: use array or vector

Daniel wrote:

What does OP stand for?
>
Daniel

Original Poster.

[=?ISO-8859-1?Q?Fernando_G=F3mez?=]

Re: use array or vector

Daniel wrote:

I wanted to use an object from the newer .NET namespace.
>
Daniel
>

Then you could use System::Collect ion::ArrayList.

Regards.

[Ben Voigt [C++ MVP]]

Re: use array or vector

Fernando Gómez wrote:

Daniel wrote:

>I wanted to use an object from the newer .NET namespace.
>>
>Daniel
>>

>
Then you could use System::Collect ion::ArrayList.

Don't use ArrayList in new code.

Use ::System::Colle ctions::Generic ::List<Tinstead , with an appropriate
value for T.

>
Regards.

[Ben Voigt [C++ MVP]]

Re: use array or vector

Daniel wrote:

If I use std::vector, would my code still be portable to other .NET
runtimes on top of other platforms?

C++ code for .NET is only portable if
(1) You are using VC2005 or newer
(2) You pass /clr:pure, which disallows a lot of native stuff. Whether
std::vector still works I can't say, it may even depend on the type you are
using it with.

>
Daniel
>
"David Wilkinson" <no-reply@effisols. comwrote in message
news:us7eBt15IH A.3480@TK2MSFTN GP03.phx.gbl...

>Daniel wrote:

>>I need to use arrays that I can dimension during runtime. Is there
>>a way to do that in VC++ .NET using arrays, or would I need to use
>>vectors instead?

>>
>Daniel:
>>
>If this is a question about standard C++, you should have asked it in
>microsoft.publ ic.vc.language.
>>
>And the answer would have been: use std::vector.
>>
>--
>David Wilkinson
>Visual C++ MVP

[Daniel]

Re: use array or vector

Why use that instead of ArrayList?

Daniel

"Ben Voigt [C++ MVP]" <rbv@nospam.nos pamwrote in message
news:uY9UG345IH A.1176@TK2MSFTN GP02.phx.gbl...

Fernando Gómez wrote:

>Daniel wrote:

>>I wanted to use an object from the newer .NET namespace.
>>>
>>Daniel
>>>

>>
>Then you could use System::Collect ion::ArrayList.

>
Don't use ArrayList in new code.
>
Use ::System::Colle ctions::Generic ::List<Tinstead , with an appropriate
value for T.
>

>>
>Regards.

>
>

[=?ISO-8859-1?Q?Fernando_G=F3mez?=]

Re: use array or vector

Daniel wrote:

Why use that instead of ArrayList?
>
Daniel
>
"Ben Voigt [C++ MVP]" <rbv@nospam.nos pamwrote in message
news:uY9UG345IH A.1176@TK2MSFTN GP02.phx.gbl...

>Fernando Gómez wrote:

>>Daniel wrote:
>>>I wanted to use an object from the newer .NET namespace.
>>>>
>>>Daniel
>>>>
>>Then you could use System::Collect ion::ArrayList.

>Don't use ArrayList in new code.
>>
>Use ::System::Colle ctions::Generic ::List<Tinstead , with an appropriate
>value for T.
>>

>>Regards.

>>

>
>

I'd guess that it is because List<Tis type safe, so you won't have to
cast from object to you your particular type, etc.

[Ben Voigt [C++ MVP]]

Re: use array or vector

Fernando Gómez wrote:

Daniel wrote:

>Why use that instead of ArrayList?
>>
>Daniel
>>
>"Ben Voigt [C++ MVP]" <rbv@nospam.nos pamwrote in message
>news:uY9UG345I HA.1176@TK2MSFT NGP02.phx.gbl.. .

>>Fernando Gómez wrote:
>>>Daniel wrote:
>>>>I wanted to use an object from the newer .NET namespace.
>>>>>
>>>>Daniel
>>>>>
>>>Then you could use System::Collect ion::ArrayList.
>>Don't use ArrayList in new code.
>>>
>>Use ::System::Colle ctions::Generic ::List<Tinstead , with an
>>appropriate value for T.
>>>
>>>Regards.
>>>

>>
>>

I'd guess that it is because List<Tis type safe, so you won't have
to cast from object to you your particular type, etc.

And additionally far more efficient when used with value types, because it
doesn't require boxing and unboxing operations, inlines better, etc.