...
vector<pair<string,double> > wordsWeight; 
wordsWeight.clear();
...

I am reading a project's code and I often found that the author create variables like above: it first declares an empty vector and then immediately call clear() on it. If it is empty, why should clear() do anything useful?

Can I safely remove it and similar statements, or there is some usefulness of it?

CodePudding user response：

If it is empty, why should clear() do anything useful?

It doesn't.

Can I safely remove it

Yes.

and similar statements

Depends on details.