keep an open stream

[Gary Wessle]

Hi

I need to save on open(ing) ifstream in a loop, so I thought to have a
map<string, ifstreamwhere the input streams are open all them time.

class A
{
std::map<std::s tring, std::ifstreamm_ is;

public:
void populate_the _stream();
};

A::A()
{
for( vector<string>: :iterator i = files_vec.begin (); i !=
files_vec.end() ; i++ )
{
m_is[*i] = ifstream (*i)( f.c_str() );

hummmm

not sure.

thanks for helping

[Ian Collins]

Re: keep an open stream

Gary Wessle wrote:

Hi
>
I need to save on open(ing) ifstream in a loop, so I thought to have a
map<string, ifstreamwhere the input streams are open all them time.
>
class A
{
std::map<std::s tring, std::ifstreamm_ is;

You can't copy an ifstream, so you can't store them in a container.

--
Ian Collins.

[Thomas J. Gritzan]

Re: keep an open stream

Ian Collins schrieb:

Gary Wessle wrote:

>Hi
>>
>I need to save on open(ing) ifstream in a loop, so I thought to have a
>map<string, ifstreamwhere the input streams are open all them time.
>>
>class A
>{
> std::map<std::s tring, std::ifstreamm_ is;

>
You can't copy an ifstream, so you can't store them in a container.

Right, but you can store a pointer or smart pointer in a container, like:

std::map<std::s tring, boost::shared_p tr<std::ifstrea m m_is;

--
Thomas

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