[Note: I've resent this - since apparently it never made it to the list. Can someone please complain offlist if they did get the previous one?]
> > >Damian Conway [mailto:[EMAIL PROTECTED]] wrote: > > > >You *could* instead consider reversing the arguments to > all the list > >manipulation operators: > > > > @result = map @data { mapping() } > > @result = grep @data { selector() }; > > @result = sort @data { comparison() }; > > @result = reduce @data { combinator() }; > > What about: $result = join @data, ""; It might not be a list manipulation operator, but people are going to get awfully confused if it isn't changed to this. Why should: $result = join "", @data; but: $result = map @data { "$_" }; Personally, I am biased since I rather like the map/sort/map type thing - looking at the data being manipulated from the bottom upwards. @result = map { $_->[0] } sort { $a->[1] <=> $b->[1] } map { [$_, hash($_)] } @data; I like my indentation better too :P > > I would love this. From an OO point of view, it > looks much more natural imho to think on map and > friends as list methods that take block arguments > than as block methods that take arrays as arguments. I disagree on the basis of what it'll do to something like join. It is far more readable to have: $result = join " ", "first", "second", "third"; than: $result = join "first", "second", "third", " "; since in the second version the joining character(s) is near the end. Usually if reading code you want to find out quickly what character(s) is being used. > In other words: > > @result = @data.map(&mapping) > > looks better than: > > @result = &mapping.map(@data) > Can't the first version be make valid without that modification to order of map/sort etc? > Mmm.. If we did reverse the order of the arguments I was > expecting it to > become: > > @sorted_by_size = > @files.map({ [$_, -s] }) > .sort({ $^a[1] <=> $^b[1] }) > .map({ $_[0] }) Or basically: @sorted = @files .map ({ [$_, -s] }) .sort({ $^a[1] <=> $^b[1] }) .map ({ $_[0] }) Lovely, data goes in at the top and actions are processed from the bottom up... at least according to how I currently think of map/sort/map. Is this OOPism worth the pain to the rest of us? Jonathan Paton __________________________________________________ Do You Yahoo!? Everything you'll ever need on one web page from News and Sport to Email and Music Charts http://uk.my.yahoo.com
