Linked Questions

4
votes
2answers
2k views

Local variables

I'm trying to use Modules together with functions. tmp2 = x^2 + 1; f[y_] := Module[{x = 1}, Evaluate[y tmp2]] This works when ...
3
votes
2answers
138 views

HoldFirst and Hold expression as argument

I store a reference to the association in a held expression in a variable: a=<||>; b=Hold[a]; And in the code, I want to do manipulations with the original ...
3
votes
2answers
179 views

Order of Evaluate for Map

I would like to get a list of variable names as strings. For example, x = 1; y = 2; Map[SymbolName, Unevaluated /@ Unevaluated@{x, y}] {"x", "y"} This works ...
19
votes
1answer
873 views

List manipulation to build a functional expression

Since Mathematica deals with Head[a, b] as an expression in this way The first Part of Head[a, b] is ...
6
votes
1answer
475 views

Generate regularly spaced points from the surface of simplexes

I need to generate regularly spaced samples (points) from the surface of unit simplexes with 2 or greater vertices or end points. I can generate random samples pretty straightforwardly: ...
5
votes
1answer
106 views

Convert between string and expression representation of boxes

Boxes may be represented as expressions or as strings. How can I convert between the two forms? In particular, how can I convert from the string representation to the expression representation? ...
3
votes
1answer
304 views

Generate assignment code to symbols from string

I want the function to take in string, then assign a value to its corresponding symbol. An implementation using ToExpression is ...
3
votes
1answer
266 views

different situations with Compilation of ConstantArray

First, we load some tools related to Compile for analysis. ...
2
votes
1answer
1k views

How to evaluate some parts of an expression inside Hold? [duplicate]

I want to return a Hold expression but with some parts pre-evaluated. The easiest way to explain this is probably through code example. Here is what I have ...
2
votes
1answer
93 views

Writing a procedure that invokes Manipulate[]

I would like to write a procedure with the signature: Foo[vars, params] which produces a Manipulate object. The procedure ...
1
vote
1answer
107 views

How to get LogPlot to accept a Sequence for its Min/Max Limits [duplicate]

If you use Plot like this, Plot[Sin[x], {x, 1, 5}] it produces the correct Sin graph ...
1
vote
1answer
160 views

Using With in combination with Graphics [duplicate]

Assume that we are given a symbol p={x,y} which should represent a 2D point. If x and y have ...
0
votes
1answer
146 views

Overriding the behavior of Dot

I would like to override the behavior of Dot, so that Dot[u,v] will return a scalar instead of a 1x1 matrix in the case that the ...
0
votes
1answer
183 views

Using sublists returned from a function as elements of a list argument to an other function

This is a contrived example, but it gets the point across. I am looking to use the following as inputs: ...
1
vote
0answers
35 views

How to replace expressions in a `HoldComplete` and then evaluate them? [duplicate]

Example: ...

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