A name that is relative to a declared context, eg just ArrayList (not java.util.ArrayList)
Analogous the a relative path in a filesystem, the name excluded the path of the containing/enclosing class, leaving just the name itself.
Questions tagged [unqualified-name]
19 questions
23
votes
2 answers
Why does this template function not behave as expected?
I was reading about template functions and got confused by this problem:
#include
void f(int) {
std::cout << "f(int)\n";
}
template
void g(T val) {
std::cout << typeid(val).name() << " ";
f(val);
}
void…
Zhongqi Cheng
- 283
- 1
- 5
11
votes
5 answers
Unqualified name in Java
The teacher in our programming lessons is talking about "unqualified names", but I'm wondering what they really are.
I suspect that things such as method names are unqualified, but I'm not certain.
Is there anyone who can explain this to me? I need…
user4424299
6
votes
1 answer
Why doesn't `static_pointer_cast` work with ADL, but requires explicit `std::`?
Consider
// https://godbolt.org/z/z5M9b9jzx
#include
#include
struct B {};
struct D : B {};
int main() {
std::shared_ptr b = std::make_shared();
auto d = static_pointer_cast(b);
assert(d);
}
I'd've expected…
Marc Mutz - mmutz
- 24,485
- 12
- 80
- 90
4
votes
1 answer
Which functions in standard C++ library should not be prefixed with std:: when used?
When I program in C++, instead of writing using namespace std;, I generally tend to use std:: prefixed components like std::cout, std::cin etc. But then I came across ADL and why you should use using std::swap;.
Many components of the standard…
Sourav Kannantha B
- 2,860
- 1
- 11
- 35
4
votes
1 answer
Overload resolution of a qualified name
Consider this function call:
foo::bar();
11.3.1.1.1, paragraph 3 [over.call.func] (N4778) covers this case:
In unqualified function calls, the name is not qualified by an -> or . operator and has the more general form of a primary-expression. The…
eca2ed291a2f572f66f4a5fcf57511
- 2,271
- 1
- 15
- 32
4
votes
0 answers
C++ non-qualified lookup
I have the following code:
//mystd plays a role of the std namespace
//which does not allow any new overloads in it
//so we define one in the global namespace
namespace mystd {
template
struct A {};
}
//if one uncomment this,…
Dmitry Panteleev
- 191
- 7
3
votes
1 answer
Why must enum constants be unqualified in switch cases in java?
A bit of context. This is about the Problem with qualified enum names in switch cases like in the example:
enum MyEnum {
A,
B,
;
}
switch(methodReturnungMyEnum()){
case MyEnum.A:
// ...
break
case MyEnum.B:
// ...
…
Burdui
- 1,242
- 2
- 10
- 24
3
votes
2 answers
Is it possible to have a non-friend function which can only be found by ADL?
C++ has a feature, that in-class-defined friend functions can only be found by ADL (argument dependent lookup):
struct Foo {
friend void fn(Foo) { } // fn can only be called by ADL, it won't be found by other lookup methods
};
Is it possible to…
geza
- 28,403
- 6
- 61
- 135
2
votes
3 answers
how to solve unqualified name lookup problem
I have the following simplified program:
class Base { };
template < typename T >
class X: public T
{
public:
using TOP = T;
};
// with dependent template parm
template < typename T >
class Y: public X< T >
{
// I have to write…
Klaus
- 24,205
- 7
- 58
- 113
1
vote
2 answers
Trying to sort map by values but get errors
I have this program with a map and i'm trying to sort them by values but i got errors. Can anyone tell me what I do wrong. Errors are at 28, 29, 30 line. Thanks
#include
#include
#include
Kent
- 13
- 3
1
vote
1 answer
It seems to me that there are two candidate functions for the call g(parm, 1) in the example in [basic.lookup.argdep]/3
Example in [basic.lookup.argdep]/3:
namespace NS {
class T { };
void f(T);
void g(T, int);
}
NS::T parm;
void g(NS::T, float);
int main() {
f(parm); // OK: calls NS::f
extern void g(NS::T, float);
g(parm, 1); // OK: calls…
WaldB
- 1,261
- 7
- 14
1
vote
1 answer
error: expected unqualified-id before ‘const’
I have seen a few questions on this error, but I don't have much experience with making a class in C++, so I don't actually understand what the answers mean. I should also point out that I didn't write this code.
I'm getting the error stated in the…
Joshua D'Agostino
- 39
- 4
- 10
1
vote
3 answers
reference to array is ambiguous error when using memset function
I didn't understand why i take this "strange" error. I read similar questions but it didn't answer my questions. If i define the array inside main function rather than global scope, there is no error. But assume that i have to define this array in…
metis
- 1,024
- 2
- 10
- 26
0
votes
1 answer
C++, conflicting between library function and inhertited class function
#include
#include
using namespace std;
class A{
public:
bool close(){ return true; }
};
class B: public A{
public:
void fun(){
(void) close(1);
}
};
int main() {
B b;
…
R_S
- 11
- 3
0
votes
2 answers
Stored procedures with unqualified table names not working with Babelfish
I have created a Babelfish-enabled Postgres database in RDS.
I connected with SSMS and created a Database named 'demo'.
Within 'demo' I created a Schema named 'biz'.
I created my tables and stored procedures in the 'biz' schema.
The stored…
Brad Thomas
- 1
- 1