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//===----------------------------------------------------------------------===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
// <unordered_set>
// template <class Value, class Hash = hash<Value>, class Pred = equal_to<Value>,
// class Alloc = allocator<Value>>
// class unordered_set
// size_type erase(const key_type& k);
#include <unordered_set>
#include <string>
#include <cassert>
int main()
{
{
typedef std::unordered_set<int> C;
typedef int P;
P a[] =
{
P(1),
P(2),
P(3),
P(4),
P(1),
P(2)
};
C c(a, a + sizeof(a)/sizeof(a[0]));
assert(c.erase(5) == 0);
assert(c.size() == 4);
assert(c.count(1) == 1);
assert(c.count(2) == 1);
assert(c.count(3) == 1);
assert(c.count(4) == 1);
assert(c.erase(2) == 1);
assert(c.size() == 3);
assert(c.count(1) == 1);
assert(c.count(3) == 1);
assert(c.count(4) == 1);
assert(c.erase(2) == 0);
assert(c.size() == 3);
assert(c.count(1) == 1);
assert(c.count(3) == 1);
assert(c.count(4) == 1);
assert(c.erase(4) == 1);
assert(c.size() == 2);
assert(c.count(1) == 1);
assert(c.count(3) == 1);
assert(c.erase(4) == 0);
assert(c.size() == 2);
assert(c.count(1) == 1);
assert(c.count(3) == 1);
assert(c.erase(1) == 1);
assert(c.size() == 1);
assert(c.count(3) == 1);
assert(c.erase(1) == 0);
assert(c.size() == 1);
assert(c.count(3) == 1);
assert(c.erase(3) == 1);
assert(c.size() == 0);
assert(c.erase(3) == 0);
assert(c.size() == 0);
}
}
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