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15h
comment How to imitate list comprehensions for constant arrays?
although I would use a more distinct symbol personally
15h
comment How to imitate list comprehensions for constant arrays?
Star[{a_},n_Integer]:= ConstantArray[a,n]
2d
comment Preventing Power from evaluating principal value
perhaps simpler (but also not as "controllable" maybe) PowerExpand@Power[e^(2 I \[Pi]), (1/2)] /. e -> E
2d
comment Preventing Power from evaluating principal value
somewhat cumbersome: PowerExpand[Inactivate[(E^(2 I \[Pi]))^(1/2), Times]] // Activate
Jul
23
comment Identify a scalar, a list
check out MatrixQ
Jul
23
comment New AssociationThread forms in 10.2?
I would report to support@wolfram.com as a bug. Either the docs or the function is wrong.
Jul
16
comment Converting a Table to a Dataset
I actually like @Szabolcs' answer in the comments much better
Jul
16
comment Converting a Table to a Dataset
this is pretty long too: Dataset[tbl][All, AssociationThread[col, Range[Length[col]]]]
Jul
9
comment How to extract the time t of an interpolated function created by NDSolve?
what @Guesswhoitis says. also see here
Jul
2
comment Limit of Nested Radical $\sqrt{1+\sqrt[2!]{2^2+\sqrt[3!]{3^3+…}}}$
s[n_]:=Sqrt[1 + Fold[(#2^#2 + #1)^(1/#2!) &, 0, Range[n, 2, -1]]]
Jun
30
comment What options need to be set for Simplify to perform a certain manipulations similar to FullSimplify?
you might want to check out the option TimeConstraint. For example FullSimplify[expr, TimeConstraint -> 1]
Jun
29
comment Factoring the imaginary unit
perhaps a crime against codemanity: factorI[expr_] := I Inactive[Plus] @@ (ComplexExpand[ReIm[expr]] {-I, 1})
Jun
22
comment I have the minimum Y value. I want to find the corresponding X value from the list
@halirutan I can't disagree that it should be the fastest.
Jun
22
comment I have the minimum Y value. I want to find the corresponding X value from the list
TakeSmallestBy[data, Last, 1]
Jun
19
comment How to implement a custom random process object?
It's akin to how RandomVariate takes a dist. dist is a distriubtion.
Jun
19
comment How to implement a custom random process object?
TransformedProcess?
Jun
19
comment How to implement a custom random process object?
proc is the process
Jun
18
comment Why is Thread[{ a, b }] the same as Transpose[{ a, b }]?
Look at Thread[f[a,b]] then %/.f->List.
Jun
17
comment List command separating multiplicative terms
In Wolfram Language there is a VERY big difference between ab and a b. The first is the symbol ab the second is really a*b. When talking about your problem, it would help a great deal to be clear EXACTLY what inputs and outputs you expect.
Jun
11
comment Convert List of Airport Codes to Entities
also Interpreter["Airport"][airports]