Re: sort constants confusing
- Posted by kinz Aug 01, 2017
- 2105 views
Tom wrote:
My working sorting definitions are:
Let's see.
stable
- as found in msort but not in std/sort.e
"Stable" doesn't seem to be one of the definitions at all.
Unstable is just bad. So "stable" is good? Or what?
So, maybe, msort is just one of the specific sortings?
And requires more specific definition?
rank
- as output by the compare function (larger or smaller) or custom_compare
Try to find rank in The Archive of RDS.
I found just "Frank Dowling".
Just 2 entries.
So, rank is not the Euphoria language word at all.
BTW, for example, I am the retired captain of the second rank
of Russian Navy, former submariner. Maybe....??? 
direction
- UP or DN (default small to large )
In classic EU (earlier 4), it is ORDER,
not direction. Direction is extra parameter.
Why?
EU works with numbers and only with numbers
and their values.
ERM reads:
"There aren't really any "characters" in Euphoria, just numbers (atoms)."
So, EU has just 2 kinds of sortings:
usual (just for numbers)
and
special (or specific) for the user defined types
(strings encoded as ascii, utf, koi8-r, unicode, etc etc).
Main EU sorting is usual, just for numbers, in two orders,
just "up" and "down".
order
- the resulting sorted sequence
- default is numerical (mathematical number line)
- ASCII order for historical reasons
- unicode order is what UTF8 gives you
- natural order (as in nat_sort.zip)
- user defined for things like sorting playing cards
No. After "default", i.e. usual, these are specific sortings, not orders.
Regards
kinz
