a question about "bind2nd" ?

[flyaflya]

i use a class static member function to for_each:
class t1
{
static test(string s);
}

main()
{
list<string> slist;
...
for_each(slist.begin(), slist.end(), t1::test);
}
this can run, but when i give t1::test a parameter,like this :
class t1
{
static test2(string s, int 5);
}
main()
{
for_each(slist.begin(), slist.end(), bind2nd(t1::test2,5) ); //error !!!
for_each(slist.begin(), slist.end(), bind2nd(ptr_fun(t1::test2,5) ) );
//also error !!!
}

how to resolve this problem?

 

[Andre Kostur]

i use a class static member function to for_each:
class t1
{
static test(string s);
}

main()
{
list<string> slist;
...
for_each(slist.begin(), slist.end(), t1::test);
}
this can run, but when i give t1::test a parameter,like this :
class t1
{
static test2(string s, int 5);
}
main()
{
for_each(slist.begin(), slist.end(), bind2nd(t1::test2,5) );
//error !!!
for_each(slist.begin(), slist.end(),
bind2nd(ptr_fun(t1::test2,5) ) );
//also error !!!
}

how to resolve this problem?

First, post a short _compilable_ example of your problem. Use copy and
paste, don't attempt to type it in since you may make transcription
errors.

As an example, you don't give the 2nd parameter to test2 a name. And,
Standard C++ doesn't do default return values from functions, so a proper
declaration for main is "int main()"

 

[Thomas Maier-Komor]

i use a class static member function to for_each:
class t1
{
static test(string s);
}

main()
{
list<string> slist;
...
for_each(slist.begin(), slist.end(), t1::test);
}
this can run, but when i give t1::test a parameter,like this :
class t1
{
static test2(string s, int 5);
}
main()
{
for_each(slist.begin(), slist.end(), bind2nd(t1::test2,5) ); //error !!!
for_each(slist.begin(), slist.end(), bind2nd(ptr_fun(t1::test2,5) ) );
//also error !!!
}

how to resolve this problem?

for_each(slist.begin(), slist.end(), bind2nd(ptr_fun(t1::test2),5 ) );