# How can I use in Manipulate an array of integers as an input?

Posted 3 months ago
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 I want to use a list of integers in something like this: Manipulate[ Sum[i, {i, l}], {l} ] Whithout having to use the brackets in the input field, i'd like to use 1,2,3 instead of {1,2,3}. Is that possible? Answer
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Posted 3 months ago
 Hi Francesco,Can you please clarify your question. There is no {1, 2, 3} in the posted code so it is not clear what exactly you are trying to replace. Answer
Posted 3 months ago
 Hi Rohit,I'd like to use 1,2,3 instead of {1,2,3} in the input field below.  Answer
Posted 3 months ago
 I'm taking a guess that you want to pass separate scalars to a function instead of putting those scalars into a list.The Wolfram has the concept of sequences which can help. And fortunately, it is easy to switch between sequences and lists. For example, if I define a function as: f[x : ___] := List[x]; f[x_List] := x; Then, I can call this function with either: f[1, 2, 3]; f[{1, 2, 3}]; And get the same result: {1, 2, 3}If this isn't what you are talking about, please provide some more info.THANKS Answer
Posted 3 months ago
 Thanks Mike, That's more or less what i'd like to do, but this behavior does not seem to transpose well into Manipulate expressions.. Or at least i did not manage to make it work.Let's say we want to use a sequence in this Manipulate object, and use 1,2,3 as an input instead of {1,2,3}. How could we do it?  Answer
Posted 3 months ago
 I suggest letting your input be a string. Then you can use Evaluate as follows: input = "1, 2, 3"; Evaluate["{" <> input <> "}"] This returns the list: {1, 2, 3} Answer