Listing 10 shows one approach, which is to bind the "Delete" trigger to a node in the data model, and then to make that node non-relevant when the count of nodes in the set reaches 1.

清单10给出了一种方法，那就是将“删除”触发器绑定到数据模型中的节点上，然后在节点集中的节点数达到1时使该节点变为不相关。

youdao

Modeling applications usually display the geometric vertex count, ie, the number of distinct corner points that make up a model.

建模应用程序通常显示几何顶点的数量，例如构建模型不同角点的数量。

youdao

Modeling applications usually display the geometric vertex count, i. e. number of points that make up a model.

建模应用程序通常显示几何顶点的数量，例如构建模型不同角点的数量。

youdao

According to my count, we now have eight Nobel Prizes to economists who cast doubt on the Keynesian model, and zero to economists for advancing the Keynesian agenda.

FORBES: Thomas Sargent, Rational Expectations And The Keynesian Consensus

That did not happen, so the Standard Model, which does contain a small asymmetry between matter and antimatter, but not one big enough to count, must be wrong.

ECONOMIST: Particle physics makes sense, but it assumes too much