constructible

基本解释

If neither the second nor third option above is a valid option, T must be copy constructible and assignable.
如果上面第二和第三个选项都是有效选项，T 必须是可构造和可赋值的副本。
Hovering the cursor over either diagram white space or a modeling element causes a bar to appear that contains the icons that represent context specific constructible elements.
将鼠标移到图的空白区域或一个建模元素上面，这个工具栏就会出现，其中有表示与上下文相关的可创建元素图标。
Copy constructible types must be able to be constructed from another member of the type.
可复制构造的类型必须能够从该类型的另一个对像进行构造。