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A probably simple question about pick semantics [message #34794]

Mon, 12 December 2011 16:58

peek
Messages: 13
Registered: March 2010

Promising Member

I wanted to pass a Vector by reference to a template function, but the Vector is lost Sad

:

.cpp file

Vector<double> v;
v << 1;

Test(v);

.h file

template <class T>
void Test(T v)
{
	// Nothing done
}

After calling to Test(), Vector v contents disappear.

When debugging you can see than before jumping to Test(), the compiler call to Vector pick constructor:

Vector(pick_ Vector& v)          { Pick(v); }

and before leaving Test(), the compiler calls Vector destructor:

~Vector()  { ....

However if Test is called with a pointer to Vector, v contents remains.

Test(&v)

What could we do to call the templated function without loosing Vector contents?

Thank you Smile

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[Message index]

		A probably simple question about pick semantics By: peek on Mon, 12 December 2011 16:58
		Re: A probably simple question about pick semantics By: cbpporter on Mon, 12 December 2011 17:08
		Re: A probably simple question about pick semantics By: peek on Fri, 16 December 2011 22:35
		Re: A probably simple question about pick semantics By: mirek on Fri, 16 December 2011 22:49
		Re: A probably simple question about pick semantics By: peek on Sat, 17 December 2011 00:26

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