in reply to Re^2: Split does not behave like a subroutine
in thread Split does not behave like a subroutine

Sorry that's too complicated for me, TL;DR

> I have to understand what (LIST) means in the documentation.

According to the docs cited in

List's terminology and Parentheses in Perl


Uppercase "LIST" in perldocs is a argument placeholder for any code ...

For instance from the docs for print ...

print LIST; means that ...


> To understand this:

> > The scalar comma operator returns the last element.

> I must understand in which list it is the last element.

Comma separated lists (sic)

Please compare (updated)

# --- list assignments @a = (1,2,3); # list comma @a = (1..3); # list range ($a) = @a; # deconstruction => $a==1 # --- scalar assignments $a = (1,2,3); # scalar comma $a = (1..3); # flip flop operator ... Oo oops! $a = @a; # scalar @a == length

The parens on RHS only do grouping here they do not create a list. Hence the context is propagated to the operators , and ..

@a = and (...)= are "list assignment" imposing "list context".

The range 1..3 returns the list value 1,2,3 in list context only.

You have to think of the whole statement as an op-tree...

With ...

If that's not clear enough please show a short code exemplifying your problem.


Cheers Rolf
(addicted to the Perl Programming Language :)
Wikisyntax for the Monastery


you may want to play around yourself with B::Deparse and B::Concise to experiment around with the snippets shown

perl -MO=Deparse,-p -e "CODE"


perl -MO=Concise -e "CODE"