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Latest version: 1.1.3
2018-10-06T10:58:00.000100Z
I am trying to set values at different indexes within a flat vector in once call, e.g. [0 0 0 0] => [0 1 0 3]. I tried
(setval [(nthpath 1)(nthpath 3)] [1 3] [0 0 0 0])
but got a runtime exc….What should I use instead?
Thanks in advance..
nathanmarz 2018-10-06T12:42:23.000100Z
@kingcode there's two approaches:
(setval (subselect (multi-path 1 3)) [1 3] [0 0 0 0])
(multi-transform
(multi-path
[1 (terminal-val 1)]
[3 (terminal-val 3)])
[0 0 0 0])
manas_marthi 2018-10-08T16:03:27.000100Z
Hi Nathan, if I have a vector of vectors with index & new-values,or a vector of maps with index & new-value pairs, then how do I rewrite the above. please advise.. thank you
manas_marthi 2018-10-09T12:44:40.000100Z
I am thinking of this data
input vec: [:a :b :c ... :m ... :z]
A map of indices and new values
{
2 :c2
12 :m2
25 :z2
}
Or a map of old value new value pairs
{
:c :c2
:m :m2
:z :z2
}
output vec: [:a :b :c2 ... :m2 ... :z2] manas_marthi 2018-10-09T13:05:36.000100Z
Essentially how to deal with the scenario when I have a lot of values to be replaced and not just a handful of indices that can be hardcoded in the multipath selector expression..
nathanmarz 2018-10-09T16:06:41.000100Z
for the latter you can do (transform [ALL #(contains? replacements %)] replacements data)
nathanmarz 2018-10-09T16:07:03.000100Z
for the first I would just do that with a reduce
manas_marthi 2018-10-10T10:32:52.000100Z
Noted thank you
nathanmarz 2018-10-06T12:42:42.000100Z
the second is more efficient
2018-10-06T12:42:48.000100Z
Thank you @nathanmarz!
2018-10-06T12:43:19.000100Z
Looking forward to learn and use more of this great library:)