Why global-scope function declaration with built-in type arg must be visible before unqualified call...

What is "Argument-Dependent Lookup" (aka ADL, or "Koenig Lookup")?...

Compile error when calling operator<< on a custom type from a different namespace...

Do namespaces affect order of template function instantiations?...

ADL lookup not considering std for non-template function from within another namespace...

How does "using std::swap" enable Argument-Dependent Lookup (ADL)?...

What does `using std::swap` inside the body of a class method implementation mean?...

Why doesn't argument-dependent lookup work for std::make_tuple?...

Why does "xxx::function();" not work but "using namespace xxx; function();" does...

How do I specialize a templated function for types that have a particular method name?...

argument dependent lookup preference during unqualified lookup...

ADL not working as expected...

Trouble with using overloaded << for std::variant...

Best practice for overloading functions with only STL types...

first friend function template declaration is visible through `using namespace` but not through qual...

Which functions in standard C++ library should not be prefixed with std:: when used?...

namespace usage is preventing template instantiation of overload...

using namespace std causes boost pointer cast to trigger ADL in c++17 standard...

ADL in case of equal-named member function...

Hidden friend to_json function unexpectedly resolves for shared_ptr...

Trying to create a universal map printer and this snippet won't compile (Issue with ADL?)...

Deduction of template arguments for friend function declared in class template...

Should static_pointer_cast calls be std:: qualified, or relied upon ADL?...

Why is this function call didn't reject the unsuitable overload?...

C++ class templates can be implicity specialized and instantiated without angle brackets?...

Why do `std::ranges::size` require a non-const method when using ADL?...

Rationale for Koenig lookup...

undefined reference to inline friend...

Unqualified name lookup does not look in local namespace after using declaration...

C++20 concepts using ADL with circular dependency...