Perhaps there is some sense to this, but it strikes me as peculiar that the unionof the two sets contains the float 4.0, while their intersection contains the int 4.
或许这有某种意义，但奇怪的是，这两个集的合集包含浮点数4.0，而其交集包含整数4。
2
The new permitted set is taken as a unionof the file's permitted set and the result of intersecting the file's and process's inheritable sets.
新的允许集是文件的允许集与文件和进程的可继承集的交集合并的结果。
3
For example, the UnionExpr construct (written as a | b, and representing the unionof two node sets) is implemented by the class com.icl.saxon.expr.UnionExpression.