Questions tagged [slot]
58 questions
2
votes
2 answers
slot assignment to a local variable
Let me start with an example:
data = Partition[RandomInteger[50, 40], 3];
s = {10, 50};
I'd like to choose the first element of each sublist subject to the selector "s". and then find the maximum of the list by the last element.
one solution is…
Amir Jalali
- 25
- 3
1
vote
1 answer
Explanation required for the Slot function
I have been trying to understand the following function
l = {{1, 3}, {3, 4}};
GraphPlot[{1 -> 2, 3 -> 4, 1 -> 3, 2 -> 4, 1 -> 2, 3 -> 4},
VertexLabeling -> True,
EdgeRenderingFunction -> (If[
Intersection[l, {#2}] != {}, {Red, Arrow[#1,…
no-one
- 1,243
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0
votes
0 answers
Trouble using list of slot variables?
When I run this code:
S={a,b};
G=Subsets[S];
R=Table[SymmetricDifference[G[[i]],G[[j]]],{i,1,Length@G},{j,1,Length@G}];
TableForm[R/.({#1->1,#2->2,#3->3,#4->4}&@@G)]
It works as desired, ie: It outputs:
But when I do this with T being a list…
Red Banana
- 5,329
- 2
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0
votes
1 answer
How I can get only second part of relation?
How I can get only the second part of this relation?
I want to get Image of function where R is a relation and A is a set.
Image[R_, A_] := Block[{}, For[i = 0, i < Length[A], i++, Select[#2[R]]]]
But it doesn't work.
BlueMan
- 1
- 1
0
votes
0 answers
Understanding solution with slots
I am trying to find eigenvalues of a matrix. It has two symbols $k_1$ and $k_2$. I get this solution from mathematica
Reading the doucmentation, I know # is a placeholder, much like an input to an expression. But I have no inputs to give.
My…
Zero
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