unique_ptr : calling make_unique twice one after the other
1 std::unique_ptr< Test > upt(std::make_unique< Test >(2));
//No leak here, as it does reset, which will deallocate.
3 upt = (std::make_unique< Test >(1));
In the above snippet, on call to line 3, twice destructors of Test gets called, and allocates memory for array of size 1,
So, who call the reset? Is it make_unique does it?
Also, can I get detail implementation of make_unique and make_shared.
pointers unique
edited Nov 15 '18 at 4:21
kit
1,1063816
asked Nov 15 '18 at 3:57
Reshma DhotreReshma Dhotre
12
add a comment |
1 std::unique_ptr< Test > upt(std::make_unique< Test >(2));
//No leak here, as it does reset, which will deallocate.
3 upt = (std::make_unique< Test >(1));
In the above snippet, on call to line 3, twice destructors of Test gets called, and allocates memory for array of size 1,
So, who call the reset? Is it make_unique does it?
Also, can I get detail implementation of make_unique and make_shared.
pointers unique
edited Nov 15 '18 at 4:21
kit
1,1063816
asked Nov 15 '18 at 3:57
Reshma DhotreReshma Dhotre
12
It can't bemake_unique. It has to beoperator=.
– David Schwartz
Nov 15 '18 at 4:00
class Test private: int m_a; public: Test(int i) :m_a(i) Test() :m_a(0) ~Test() std::cout << "Test: dtorn"; int geta() return m_a; void seta(int a) m_a = a; ;
– Reshma Dhotre
Nov 15 '18 at 4:00
add a comment |
1 std::unique_ptr< Test > upt(std::make_unique< Test >(2));
//No leak here, as it does reset, which will deallocate.
3 upt = (std::make_unique< Test >(1));
In the above snippet, on call to line 3, twice destructors of Test gets called, and allocates memory for array of size 1,
So, who call the reset? Is it make_unique does it?
Also, can I get detail implementation of make_unique and make_shared.
pointers unique
edited Nov 15 '18 at 4:21
kit
1,1063816
asked Nov 15 '18 at 3:57
Reshma DhotreReshma Dhotre
12
1 std::unique_ptr< Test > upt(std::make_unique< Test >(2));
//No leak here, as it does reset, which will deallocate.
3 upt = (std::make_unique< Test >(1));
In the above snippet, on call to line 3, twice destructors of Test gets called, and allocates memory for array of size 1,
So, who call the reset? Is it make_unique does it?
Also, can I get detail implementation of make_unique and make_shared.
pointers unique
pointers unique
edited Nov 15 '18 at 4:21
kit
1,1063816
asked Nov 15 '18 at 3:57
Reshma DhotreReshma Dhotre
12
edited Nov 15 '18 at 4:21
kit
1,1063816
asked Nov 15 '18 at 3:57
Reshma DhotreReshma Dhotre
12
edited Nov 15 '18 at 4:21
kit
1,1063816
edited Nov 15 '18 at 4:21
kit
1,1063816
edited Nov 15 '18 at 4:21
kit
1,1063816
1,1063816
asked Nov 15 '18 at 3:57
Reshma DhotreReshma Dhotre
12
asked Nov 15 '18 at 3:57
Reshma DhotreReshma Dhotre
12
asked Nov 15 '18 at 3:57
Reshma DhotreReshma Dhotre
12
12
It can't bemake_unique. It has to beoperator=.
– David Schwartz
Nov 15 '18 at 4:00
class Test private: int m_a; public: Test(int i) :m_a(i) Test() :m_a(0) ~Test() std::cout << "Test: dtorn"; int geta() return m_a; void seta(int a) m_a = a; ;
– Reshma Dhotre
Nov 15 '18 at 4:00
add a comment |
It can't bemake_unique. It has to beoperator=.
– David Schwartz
Nov 15 '18 at 4:00
class Test private: int m_a; public: Test(int i) :m_a(i) Test() :m_a(0) ~Test() std::cout << "Test: dtorn"; int geta() return m_a; void seta(int a) m_a = a; ;
– Reshma Dhotre
Nov 15 '18 at 4:00
It can't be
make_unique. It has to be operator=.– David Schwartz
Nov 15 '18 at 4:00
It can't be
make_unique. It has to be operator=.– David Schwartz
Nov 15 '18 at 4:00
class Test private: int m_a; public: Test(int i) :m_a(i) Test() :m_a(0) ~Test() std::cout << "Test: dtorn"; int geta() return m_a; void seta(int a) m_a = a; ;
– Reshma Dhotre
Nov 15 '18 at 4:00
class Test private: int m_a; public: Test(int i) :m_a(i) Test() :m_a(0) ~Test() std::cout << "Test: dtorn"; int geta() return m_a; void seta(int a) m_a = a; ;
– Reshma Dhotre
Nov 15 '18 at 4:00
add a comment |
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It can't be
make_unique. It has to beoperator=.– David Schwartz
Nov 15 '18 at 4:00
class Test private: int m_a; public: Test(int i) :m_a(i) Test() :m_a(0) ~Test() std::cout << "Test: dtorn"; int geta() return m_a; void seta(int a) m_a = a; ;
– Reshma Dhotre
Nov 15 '18 at 4:00