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Kuba
Kuba
10:15 AM
Is there a native way to extract positions together with elements? Doing Extract after means we need to scan twice in total.
 
C. E.
C. E.
@Kuba I don't think of Part/Extract as scanning over the datastructure when I'm using it to get information. Aren't those functions super fast?
 
Kuba
Kuba
@C.E. You are probably right. I don't know though
 
C. E.
C. E.
In any case, MapIndexed and Sow might work.
 
Kuba
Kuba
10:32 AM
@C.E. so far small tests prove you are right that Extract just after is better than any Sow tricks. Probably for specific cases with packed arrays one could come up with limited workaround but in general it seems fine to call Extract.
 
ablmf
ablmf
10:57 AM
Is there any way to simplify (A \[NotSubsetEqual] B && B \[NotSubsetEqual] A) == (A != B)
This should simply be true.
 
Kuba
Kuba
@ablmf

> NotSubsetEqual[x,y,...] has no built-in meaning.
 
 
4 hours later…
Feeds
Feeds
3:26 PM
 
 
2 hours later…
Feeds
Feeds
5:25 PM
 
 
1 hour later…
KraZug
KraZug
6:28 PM
Just got an email from Wolfram promoting my own package to me, except they credit it to my former PhD supervisor...
Somewhat mixed feelings about that!
(Actually pretty pleased)
 
 
1 hour later…
KraZug
KraZug
7:55 PM
Out of interest, how many people got the email from Wolfram Publication Watch about my CompoundMatrixMethod? I'm guessing it depends on what subject areas people have ticked on their user portal.
 
 
2 hours later…
Feeds
Feeds
9:40 PM
 
Meta
Meta
10:18 PM
0
Q: Split eigenvalue tag into eigenvalues and eigenfunctions

KraZugCurrently there are 131 questions with the tag eigenvalues. This includes both questions around the finding of eigenvalues and eigenvectors of a matrix as well as of a differential operator (and associated eigenfunctions). As someone who is interested in questions of the latter type but not of t...

discussion tagging
 

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