8
votes
1answer
113 views

Strange behavior of BinCounts

Just try this example: ...
11
votes
2answers
198 views

Bug with SparseArray selector in Pick

I have created a notebook with two cells. This is the content of the first: ...
2
votes
0answers
203 views

Derivatives of list elements

Could someone explain the odd behavior of the Derivative function when drawing arguments from lists? We have, ...
27
votes
2answers
710 views

DeleteDuplicates not deleting duplicates

It is not surprising that DeleteDuplicates[{5,5.}] returns {5,5.} because DeleteDuplicates ...
5
votes
1answer
142 views

Bug in LengthWhile?

Is this a bug or my MMA went insane or I'm missing something? LengthWhile[Reverse@IntegerDigits[1000], # == 0 &] works fine, but with SameQ instead of Equal, ...
7
votes
4answers
296 views

Unexpected behavior from GatherBy in version 7

I have come across what appears to be a bug in GatherBy. It appears similar to the problem of using Table[Random[], {1000}] in ...