http://www.perlmonks.org?node_id=663785


in reply to Re^5: one-line split file sequence checker
in thread one-line split file sequence checker

That @x[@f]=@f had me puzzled for a while, but it seems it is the same as:

@x[(@f)]=(@f)

So just @f is always expanded into a list without (), and () is not necessary when defining an array from a list?

I'm still looking at the next one.