hash_set::difference_type (STL/CLR)
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The types of a signed distance between two elements.
Syntax
typedef int difference_type;
Remarks
The type describes a possibly negative element count.
Example
// cliext_hash_set_difference_type.cpp
// compile with: /clr
#include <cliext/hash_set>
typedef cliext::hash_set<wchar_t> Myhash_set;
int main()
{
Myhash_set 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();
// compute positive difference
Myhash_set::difference_type diff = 0;
for (Myhash_set::iterator it = c1.begin(); it != c1.end(); ++it)
++diff;
System::Console::WriteLine("end()-begin() = {0}", diff);
// compute negative difference
diff = 0;
for (Myhash_set::iterator it = c1.end(); it != c1.begin(); --it)
--diff;
System::Console::WriteLine("begin()-end() = {0}", diff);
return (0);
}
a b c
end
()-begin
() = 3
begin
()-end
() = -3
Requirements
Header: <cliext/hash_set>
Namespace: cliext