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Error when I trying to Add in VectorMap container a "C" struct [message #23031]

Wed, 09 September 2009 15:54

tojocky
Messages: 607
Registered: April 2008
Location: UK

Contributor

Hello all,

Help me please how can I add in VectorMap or in other container a C type struct.

I have the following situation:

extern "C" {
typedef struct C_CLASS {
	...
} C_CLASS;
}
....
typedef VectorMap<String, C_CLASS > RegistrationMap;
....
RegistrationMap     tempExactMatchMap_;

I have an error becouse the C_CLASS is not moveable.

I read that the C_Class must be moveable. How can I make this moveable?

With respect,
Ion Lupascu (tojocky)

[Updated on: Wed, 09 September 2009 15:56]

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Re: Error when I trying to Add in VectorMap container a "C" struct [message #23034 is a reply to message #23031]

Wed, 09 September 2009 17:27

Mindtraveller
Messages: 917
Registered: August 2007
Location: Russia, Moscow rgn.

Experienced Contributor

Ion, first of all, you should check if Vector as the right type of flavor for you. May be ArrayMap fits well into your program - it has no Moveable requirement and less side effects than VectorMap.

If VectorMap is required, consider using Moveable:

struct MyType: Moveable<MyType>
{
...
};

Remember that Moveable type shouldn`t contain any pointers.
Additional requirements are listed in the VectorMap help topic.

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Re: Error when I trying to Add in VectorMap container a "C" struct [message #23036 is a reply to message #23034]

Wed, 09 September 2009 18:41

sergeynikitin
Messages: 748
Registered: January 2008
Location: Moscow, Russia

Contributor

I read it every night, until I realized the essence of the case.
http://www.ultimatepp.org/srcdoc$Core$Tutorial$en-us.html

I recommend reading it slowly, several times. This is the foundation.

Please do not take offense at the didactic tone. These recommendations from the heart.

SergeyNikitin<U++>( linux, wine )
{
under( Ubuntu || Debian || Raspbian );
}

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Re: Error when I trying to Add in VectorMap container a "C" struct [message #23039 is a reply to message #23036]

Thu, 10 September 2009 08:06

tojocky
Messages: 607
Registered: April 2008
Location: UK

Contributor

sergeynikitin wrote on Wed, 09 September 2009 19:41

Thank you to all!
I found in the help topic:

Alternatively the NTL_MOVEABLE macro can be used to mark types as moveable if the class interface can not be changed, such as in:

NTL_MOVEABLE(std::string);

Thanks to guys who create this macro and write this help!

Now, I working on the cross-os plugin framework. If My tests will be favorable I will share!

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Re: Error when I trying to Add in VectorMap container a "C" struct [message #23040 is a reply to message #23039]

Thu, 10 September 2009 09:16

sergeynikitin
Messages: 748
Registered: January 2008
Location: Moscow, Russia

Contributor

The solution is really beautiful.

SergeyNikitin<U++>( linux, wine )
{
under( Ubuntu || Debian || Raspbian );
}

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