https://github.com/solareenlo/42cpp-module-05
C++ practice 05 (Exception, Base class, Derived class, Method pointer)
https://github.com/solareenlo/42cpp-module-05
42 42born2code 42cursus 42projects cpp
Last synced: 6 months ago
JSON representation
C++ practice 05 (Exception, Base class, Derived class, Method pointer)
- Host: GitHub
- URL: https://github.com/solareenlo/42cpp-module-05
- Owner: solareenlo
- Created: 2021-05-31T06:41:49.000Z (about 5 years ago)
- Default Branch: main
- Last Pushed: 2021-06-06T03:41:58.000Z (about 5 years ago)
- Last Synced: 2024-12-30T09:16:10.159Z (over 1 year ago)
- Topics: 42, 42born2code, 42cursus, 42projects, cpp
- Language: C++
- Homepage:
- Size: 63.5 KB
- Stars: 0
- Watchers: 2
- Forks: 0
- Open Issues: 0
-
Metadata Files:
- Readme: README.md
Awesome Lists containing this project
README
# 42cpp-module-05
### ex03
- 同じ base class からできた複数個の derived class に1つのメソッドから使用できるようにする
- メソッドポインタを使用する
- new 演算子を使用する
### ex02
- 同じ base class からの複数個の derived class
- オーバーライドしたメソッドを両方使用する
- derived class のオーバーライドしたメソッドの中でも base class のオーバーライドしたメソッドを呼べる
### ex01
- 複数個の exception
- 上手にエラーハンドリング
- nested classes
- [その13 内部クラスは外側クラスのメンバにアクセスし放題！](http://marupeke296.com/CPP_No13_SubClass.html)
- [そろそろ内部クラスに関して一言言っておくか](http://isoparametric.hatenablog.com/entry/20080117/1200575103)
```c++
#include
class Hoge {
public:
Hoge() : bar_(*this) {}
private:
class Bar {
public:
explicit Bar(Hoge& hoge) : hoge_(hoge) {}
void func() {
hoge_.func();
}
Hoge& hoge_;
};
Bar bar_;
void func() {
std::cout << "func" << std::endl;
}
public:
Bar& Bar() { return bar_; }
};
int main() {
Hoge hoge;
hoge.Bar().func();
return 0;
}
```
- [Why would one use nested classes in C++?](https://stackoverflow.com/questions/4571355/why-would-one-use-nested-classes-in-c)
- [Why is a type qualifier on a return type meaningless?](https://stackoverflow.com/questions/1607188/why-is-a-type-qualifier-on-a-return-type-meaningless)
### ex00
- [std::exception](https://cpprefjp.github.io/reference/exception/exception.html)
- `exception` クラスは，標準ライブラリが提供する全ての例外クラスの基底クラス．
- nested classes
- [Static constant string (class member)](https://stackoverflow.com/questions/1563897/static-constant-string-class-member)
- Before C++17
```c++
// *.hpp
class A {
private:
static const string RECTANGLE;
};
// *.cpp
const string A::RECTANGLE = "rectangle";
```
- After C++17
```c++
// *.hpp
class A {
private:
inline static const string RECTANGLE = "rectangle";
};
```
- [Weird error on 'exception specification of overriding function is more lax than base version' in C++](https://stackoverflow.com/questions/59919357/weird-error-on-exception-specification-of-overriding-function-is-more-lax-than)
- [exception specification of overriding function is more lax than base version](https://stackoverflow.com/questions/53829852/exception-specification-of-overriding-function-is-more-lax-than-base-version/53829972)