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DEVELOP > c-Plus-Plus |
| User: |
"" |
| Date: |
11 Nov 2005 02:45:21 AM |
| Object: |
Method which returns vector on unknown type |
Hi all,
Is it possible to have a class in which a method in some cases returns
a vector<int> and on others returns vector<double>? How?
Thanks,
Paulo Matos
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| User: "Eric Pruneau" |
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| Title: Re: Method which returns vector on unknown type |
11 Nov 2005 03:03:03 PM |
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<pocmatos@gmail.com> a écrit dans le message de news:
1131698721.253806.150280@g49g2000cwa.googlegroups.com...
Hi all,
Is it possible to have a class in which a method in some cases returns
a vector<int> and on others returns vector<double>? How?
Thanks,
Paulo Matos
You can use boost::any
Your method will return a vector<boost::any>
which can be .... anything!
Eric
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| User: "Axter" |
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| Title: Re: Method which returns vector on unknown type |
11 Nov 2005 12:08:46 PM |
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wrote:
Hi all,
Is it possible to have a class in which a method in some cases returns
a vector<int> and on others returns vector<double>? How?
Thanks,
Paulo Matos
Either you need to have a common base class, or you need to have types
that have a common interface.
See following example for Heterogeneous Containers that can store
objects that have different base types, but have some type of common
interface (function signature).
http://code.axter.com/HeterogeneousContainer1.cpp
http://code.axter.com/HeterogeneousContainer2.cpp
http://code.axter.com/HeterogeneousContainer3.cpp
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| User: "" |
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| Title: Re: Method which returns vector on unknown type |
11 Nov 2005 03:09:37 AM |
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It seems I found something:
http://www.parashift.com/c++-faq-lite/templates.html#faq-35.3
:)
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| User: "Zara" |
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| Title: Re: Method which returns vector on unknown type |
11 Nov 2005 03:19:02 AM |
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On 11 Nov 2005 00:45:21 -0800, wrote:
Hi all,
Is it possible to have a class in which a method in some cases returns
a vector<int> and on others returns vector<double>? How?
Thanks,
Paulo Matos
You can only have such functions if there is a base class common to
all types of results. So the answer is 'No'.
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| User: "" |
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| Title: Re: Method which returns vector on unknown type |
11 Nov 2005 03:32:53 AM |
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Zara wrote:
On 11 Nov 2005 00:45:21 -0800, wrote:
Hi all,
Is it possible to have a class in which a method in some cases returns
a vector<int> and on others returns vector<double>? How?
Thanks,
Paulo Matos
You can only have such functions if there is a base class common to
all types of results. So the answer is 'No'.
Oh. :(
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