set::empty (STL/CLR)
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The latest version of this topic can be found at set::empty (STL/CLR).
Tests whether no elements are present.
Syntax
bool empty();
Remarks
The member function returns true for an empty controlled sequence. It is equivalent to set::size (STL/CLR)() == 0. You use it to test whether the set is empty.
Example
// cliext_set_empty.cpp
// compile with: /clr
#include <cliext/set>
typedef cliext::set<wchar_t> Myset;
int main()
{
Myset c1;
c1.insert(L'a');
c1.insert(L'b');
c1.insert(L'c');
// display initial contents " a b c"
for each (wchar_t elem in c1)
System::Console::Write(" {0}", elem);
System::Console::WriteLine();
System::Console::WriteLine("size() = {0}", c1.size());
System::Console::WriteLine("empty() = {0}", c1.empty());
// clear the container and reinspect
c1.clear();
System::Console::WriteLine("size() = {0}", c1.size());
System::Console::WriteLine("empty() = {0}", c1.empty());
return (0);
}
a b c
size
() = 3
empty
() = False
size
() = 0
empty
() = True
Requirements
Header: <cliext/set>
Namespace: cliext