如何在使用此数组初始化对象时知道数组的大小？

the question says: define a container (possibly a template) of action objects (will be named Runner). Action Objects (AO) are objects that perform a user supplied function. The idea is that once an action container is loaded with AOs it can be asked to run or execute them. The results of the execution are returned in a Results array. example:the question says: define a container (possibly