topic Re: how to create a function and be able to call it for returning a value. in FlexSim Forum

how to create a function and be able to call it for returning a value.

athodupunoori — Tue, 25 Jul 2023 19:55:22 GMT

[ FlexSim 21.1.5 ]

Hi, i would like to create a function using flexscript, where when i call the function, it has to return the some value according to the calculation i put inside the function.

Example

here i am just trying to create a addition function where if i send two values, it has to save that number at specified table and return me the added value "C" for the variable "dd".

Re: how to create a function and be able to call it for returning a value.

julie_weller — Tue, 25 Jul 2023 20:13:52 GMT

Hi @Ankith T! You can add a function by going to Toolbox -> Modeling Logic -> User Commands. This will allow you to make a little function for your model. You can add the code at the bottom. Here's a link to the documentation for the tool: https://docs.flexsim.com/en/23.1/Reference/Tools/UserCommands/UserCommands.html#app

Let me know if you have any follow up questions!

Re: how to create a function and be able to call it for returning a value.

athodupunoori — Tue, 25 Jul 2023 20:23:01 GMT

if i would like to send couple of values, how to i mention that in code section?

Re: how to create a function and be able to call it for returning a value.

julie_weller — Tue, 25 Jul 2023 20:28:52 GMT

Here's an example for what you want to do:

Re: how to create a function and be able to call it for returning a value.

athodupunoori — Tue, 25 Jul 2023 21:18:45 GMT

Thank you, that cleared my doubt. But what if i would like to return multiple variables. such as string and double. where string tells me its an addition and double tells me the value of addition.

Re: how to create a function and be able to call it for returning a value.

jason_lightfoot_adsk — Tue, 25 Jul 2023 21:20:30 GMT

You can return an array or map - the latter allowing you to access the result's attribute/key values using dot notation.

Re: how to create a function and be able to call it for returning a value.

julie_weller — Tue, 25 Jul 2023 21:21:49 GMT

To do something like that you could create 2 functions, one that tells you the string and one that gives you the double. You could update the table with both of those values. You could write to a Global Variable. However you can only return 1 value, just as in C++

Re: how to create a function and be able to call it for returning a value.

julie_weller — Tue, 25 Jul 2023 21:22:54 GMT

Or as Jason said, you can update something that already consists of multiple elements, but they need to be a unit

Re: how to create a function and be able to call it for returning a value.

athodupunoori — Wed, 26 Jul 2023 15:03:42 GMT

can you send here a sample code, showing how to return values in array and how to access after returning.

Re: how to create a function and be able to call it for returning a value.

jason_lightfoot_adsk — Wed, 26 Jul 2023 15:26:01 GMT

Here's the map version:

mapResultFromCommand.fsm

customFunc code:

/**Custom Code*/
Map result;
result["calcValue"]=param(1)+param(2);
result["operation"]="Addition";
return result;

Test script:

var result=customFunc(5,9);
print(result.calcValue);
print(result.operation);

Console output:

The version with arrays is just:

/**Custom Code*/
Array result;
result.push(param(1)+param(2));
result.push("Addition");
return result;

with test script:

var result=customFunc(5,9);
print(result[1]);
print(result[2]);

If you want to use all the array operators and methods then you need to cast it as an array not var in the test script like this:

Array result=customFunc(5,9);
print(result.pop());
print(result.pop());
print(result.length);

Re: how to create a function and be able to call it for returning a value.

athodupunoori — Wed, 26 Jul 2023 15:44:26 GMT

Thank you so much, this is what exactly i needed.