Initializer list
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（為了不被混淆性病的初始）
Original:
( Not to be confused with 性病的初始 )
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他們的一部分，它負責成員和祖先初始化的構造函數
Original:
They are the part of a constructor which is responsible for member and ancestor initialization
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[编辑] 語法
constructor_signature : member_constructor_calls { constructor_body }
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[编辑] 解釋
初始化列表中初始化的對象應該出現的地方，是基類的構造函數和成員被稱為.
Original:
The initializer list is the place where initialization of the object should occur, there is where the constructors for base classes and members are called.
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成員被初始化以相同的順序，它們被聲明，而不是像在初始化列表中出現.
Original:
Members are initialized in the same order as they are declared, not as they appear in the initializer list.
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如果一個參數的構造函數中具有相同名稱的成員之一，該標識符的模糊性，通過在構造函數中調用內的intializer列表選擇參數（而不是成員）解決.
Original:
If a parameter in the constructor has the same name as one of the members, the ambiguity of that identifier being passed in a constructor call inside the intializer list is resolved choosing the parameter (and not the member).
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成員或基類中不存在該列表中的預設構造
Original:
Members or base classes not present in the list will be default constructed
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[编辑] 為例
struct Class : public Base { int x; int y; Class ( int x ) : Base ( 123 ), // initialize base class x ( x ), // x (member) is initialized with x (parameter) y ( 0 ) // y initialized to 0 {} // empty constructor body Class ( double a ) : y ( a+1 ), x ( y ) // x will be initialized before y, this means that its value here is undefined {} // No base class constructor in list, this is the same as calling Base() Class() try : Base ( 789 ), x ( 0 ), y ( 0 ) { // no exception } catch (...) { // exception occurred on initialization } };
