Linked Questions

Consider the following example, which generate two identical arrays. Why sometimes the array is packed and sometimes it doesn't? And why they perform differently? Here the arrays are packed: ...

By using dynamical programming, we can save intermediate steps for recursive relations, as in f[n_]:= f[n] = f[n-1] + f[n-2] However, this only stores ...

Let say I need and option for Plot: RegionFunction -> (-6 < #2 < 6 &) But I also want those ...

Is is possible to assign {x = 2, y = 3, z = 4} to a variable var so that one can write ...

If I have a function, that returns a function, for example: f[a_] := a^2 * # & then f[3] == 3^2 # & Is there a way ...

Introduction I often have the problem that in an expression, I want to change an option. If we are sure the option is not present, we could simply use ...

I have a list of variables variables={a,b} and a list with values values={1,2}. I'd like to define a function using the ...

I'm trying to use Modules together with functions. tmp2 = x^2 + 1; f[y_] := Module[{x = 1}, Evaluate[y tmp2]] This works when ...

Seems to me that VerificationTests are a bit verbose: ...

The post title's pretty much says it all... The reminder of this post just describes the little headway I made with this problem, FWIW. One would hope that ...

I want to convert {Hold[1 + 2], Hold[3 + 4], Hold[5*6]} into Hold[{1 + 2, 3 + 4, 5*6}]. I have tried ...

Here's an example to illustrate the issue I'm having. right = 8 - y; left = y^2 + 6; integrand = HoldForm[Evaluate[right]] - HoldForm[Evaluate[left]] (I realize ...

Suppose we have a function f[x, y, z] and we want to get all its variables Sequence[x,y,z], what method can we use then? The ...

I am working on a project in which I need to dynamically generate CompiledFunctions from Inactive expressions. For example, I ...

I'm trying to have several initializer lists in a With function and choose which one I want to use. So far I have this: ...