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KS_108262664-Participant
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October 19, 2023
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Question about passing a function to a program

  • October 19, 2023
  • 4 replies
  • 1882 views

Hello experts,

 

I hope the question is in the right category. I haven't been able to find an answer in the community yet.

 

A function should be passed as an element in a program [e.g. p(f):=II…]. This function can have a different number of its own elements [e.g. f(x1, x2, …)]. How can I pass the function to the program and how can I find out within the program how many elements the function has?

 

Thanks for your help.

 

SW: PTC Mathcad Prime 7.0.0.0

 

Best answer by LucMeekes

In Prime you cannot create a function with a variable number of parameters. However, you can create a function that accepts a vector, or a matrix, as parameter. Within the function you can determine the size of the vector or the matrix.

Below some illustrations of what you can do in Prime:

LucMeekes_0-1697736163041.png

Note that when you pass a function (name) as a parameter, you cannot inspect the parameters of that function.

You can pass a complete function call as a parameter to a function, e.g.

LucMeekes_1-1697736398567.png

The inner fun(1) results in a string that is passed as the argument to the outer fun, resulting in the response that it's got a string.

 

Success!

Luc

4 replies

L
LucMeekes23-Emerald IVAnswer
23-Emerald IV
October 19, 2023

In Prime you cannot create a function with a variable number of parameters. However, you can create a function that accepts a vector, or a matrix, as parameter. Within the function you can determine the size of the vector or the matrix.

Below some illustrations of what you can do in Prime:

LucMeekes_0-1697736163041.png

Note that when you pass a function (name) as a parameter, you cannot inspect the parameters of that function.

You can pass a complete function call as a parameter to a function, e.g.

LucMeekes_1-1697736398567.png

The inner fun(1) results in a string that is passed as the argument to the outer fun, resulting in the response that it's got a string.

 

Success!

Luc

    V
    24-Ruby IV
    ValeryOchkov24-Ruby IV
    24-Ruby IV
    October 19, 2023

    May by so

    x.png

    K
    KS_108262664-ParticipantAuthor
    4-Participant
    October 20, 2023

    Thanks for your answers.

    I was worried that there was no real solution for this.

    Maybe it will be possible in the next update.

    ttokoro
    21-Topaz I
    ttokoro21-Topaz I
    21-Topaz I
    October 20, 2023

    The number of elements in a function is fixed as the definition of the function. When you change the number of elements, a new function is defined.

    image.pngimage.png

    As Luc shows, you can use vectors or matrices on elements to change the number of elements and get the result you want.

    image.pngimage.pngimage.pngimage.png

    t.t.
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