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  • Delegating Constructor

    Reduce constructor boilerplate by delegating to another constructor in the same class.

    class Foo {
  Foo(int x)
    : Foo(x, 'y') {}
  Foo(int x, char y)
    : x(x), y(y) {}
};

  • Member Initialiser List

    Initialise class member variables before the constructor body runs.

    class Foo {
  Foo(int arg) : val(arg) {}
  int val;
};

  • Structured Binding

    Unpack pairs, tuples, and aggregates cleanly.

    auto [x, y] = std::pair{1, 2};

Recently Updated

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  • Multiple Inheritance

    Subclass extending from multiple base classes.

    class Base1 {};
class Base2 {};
class Derived : public Base1, public Base2 {};

  • Abstract Class

    Class that cannot be instantiated but can be used as a base class for inheritance.

    class Base {
  virtual void f() = 0;
};

  • Access Specifier

    Set class member accessibility.

    class Example {
public:
protected:
private:
};

  • Boolalpha

    Print booleans as "true"/"false" strings instead of the default 1/0.

    std::cout << std::boolalpha
  << true << "\n"
  << false << "\n";

  • Character Input

    Write to standard input using I/O streams.

    #include <iostream>
std::cin >> var;

  • Character Output

    Print to standard output using I/O streams.

    #include <iostream>
std::cout << var << "\n";

  • Delegating Constructor

    Reduce constructor boilerplate by delegating to another constructor in the same class.

    class Foo {
  Foo(int x)
    : Foo(x, 'y') {}
  Foo(int x, char y)
    : x(x), y(y) {}
};

  • Enumeration

    User-defined data type to give integer constants meaningful names.

    enum class Status {
  Stopped,
  Running,
  Paused
};

For Beginners

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  • Access Specifier

    Set class member accessibility.

    class Example {
public:
protected:
private:
};

  • Boolalpha

    Print booleans as "true"/"false" strings instead of the default 1/0.

    std::cout << std::boolalpha
  << true << "\n"
  << false << "\n";

  • Character Input

    Write to standard input using I/O streams.

    #include <iostream>
std::cin >> var;

  • Character Output

    Print to standard output using I/O streams.

    #include <iostream>
std::cout << var << "\n";

  • Delegating Constructor

    Reduce constructor boilerplate by delegating to another constructor in the same class.

    class Foo {
  Foo(int x)
    : Foo(x, 'y') {}
  Foo(int x, char y)
    : x(x), y(y) {}
};

  • Member Initialiser List

    Initialise class member variables before the constructor body runs.

    class Foo {
  Foo(int arg) : val(arg) {}
  int val;
};

  • Range-Based For Loop

    Loop over containers without writing indices or iterators.

    for (auto& element : container) {
  // Do something with element.
}

  • Structured Binding

    Unpack pairs, tuples, and aggregates cleanly.

    auto [x, y] = std::pair{1, 2};