Hi Andy,
Having thunk on it, I will try to articulate my preference for nil
over {} more clearly:
(clojure.data/diff {:x {:y 1}} {:x {}})
;; => ({:x {:y 1}} {:x nil} nil)
Do you agree the current result is wrong?
:x nil is not 'in' {:x {}}
nil is not associative so in this context does not mea
Not trying to hijack this thread, @andy check out Differential Sync.
On Sat, Feb 21, 2015, 4:36 PM Andy Fingerhut
wrote:
> Sorry if you've already explained this and I'm missing it, but for
> example, suppose the current state on both sides is {:x {:y 1}}, and the
> 'sender' wants to change to o
Sorry if you've already explained this and I'm missing it, but for example,
suppose the current state on both sides is {:x {:y 1}}, and the 'sender'
wants to change to one of these states:
(a) {:x nil}
(b) {:x {}}
(b) {:x []}
(c) {:x {:y nil}}
Do you plan to support sending a different 'diff' in
Hi Andy,
On Fri, Feb 20, 2015 at 5:51 PM, Andy Fingerhut
wrote:
> The goal with your library is to transmit deltas between two systems, and
> then apply those deltas to the other system to make them match, yes?
>
Correct, it works well for what I need it to do. :)
> How would you use the dif
The goal with your library is to transmit deltas between two systems, and
then apply those deltas to the other system to make them match, yes?
How would you use the diff return value ({:x {:y 1}} nil nil) to cause a
system that currently has {:x {:y 1}} to change to {:x {}}, as opposed to
some oth
On Fri, Feb 20, 2015 at 4:40 PM, Andy Fingerhut
wrote:
> Why not ({:x {:y 1}} {:x {}} nil) ?
>
Hi Andy,
Great point! Both solutions convey accurately the same meaning? I have a
subjective preference to nil as the absence of things in b that are not in
a. Conversely {:x {}} implies that :x is
Timothy, I probably haven't thought about this carefully enough yet, but
why do you expect the return value to be ({:x {:y 1}} nil nil) in your test
case?
Why not ({:x {:y 1}} {:x {}} nil) ?
Andy
On Fri, Feb 20, 2015 at 4:13 PM, Timothy Pratley
wrote:
> Alex/Rich, if a patch is welcome for th
Alex/Rich, if a patch is welcome for this I am happy to raise a ticket and
submit.
Test case:
(clojure.data/diff {:x {:y 1}} {:x {}})
Expected:
({:x {:y 1}} nil nil)
Actual:
;; => ({:x {:y 1}} {:x nil} nil)
Problem:
There is nothing only in the second input, so the second result should be
nil
