Re: [Boost-users] A question about shared_ptr

You can't pass 0 because the Type passed must be an Investment*, not just a type that could be cast to one. This is why you have to explicitly cast it yourself. Tommy On 14/07/06, Zhuo Hao wrote:

In file , I find the following function: /begin quote template shared_ptr(Y * p, D d): px(p), pn(p, d) { detail::sp_enable_shared_from_this( pn, p, p ); } /end quote If I use it as follows:"boost::shared_ptr<Investment> pInv(0,getRidOfInvestment)",it will not compile.But when I use:"boost::shared_ptr<Investment> pInv(static_cast(0),getRidOfInvestment)",it can be compiled. The constructor's first parameter is Y*,i.e.,a pointer to Y.And 0 can be interpreted as a pointer to Y,too. Why can't zero be treated as a pointer to Y here?

I will be appreciative if anyone can give me some suggestions.Thank you!

hzhuo July,14th

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