topic Looping over a List and concatenating a string in Discussions

Looping over a List and concatenating a string

ALopez — Fri, 09 Jun 2023 23:40:00 GMT

Hi, I have a "List" and I want to concatenate each item with the suffix "_2020" and Insert it into a new list.
I have tried this code but I am missing something. I will appreciate your input.

Thanks!

Names Default To Here( 1 );

FullNames ={};

todaysList = {"August", "July", "June", "May"};

TotalMs = N Items (todaysList);

For (i = todaysList, i <= TotalMs, i++,
	
	newName = (todaysList[i] ||"_2020");
	Insert Into (FullNames, newName),
	
);

Re: Looping over a List and concatenating a string

txnelson — Wed, 07 Oct 2020 19:12:32 GMT

Your For() loop starting index was invalid. Here is your code with a slight modification to make it work

Names Default To Here( 1 );

FullNames ={};

todaysList = {"August", "July", "June", "May"};

TotalMs = N Items (todaysList);

For (i = 1, i <= TotalMs, i++,
	
	newName = todaysList[i] ||"_2020";
	Insert Into (FullNames, newName),
	
);

Re: Looping over a List and concatenating a string

ALopez — Wed, 07 Oct 2020 19:25:55 GMT

Yes, I can see my Index error, darn so obvious (after you mentioned). What I still do not understand is the lack of parenthesis around the concatenation expression. I will do some more reading.
Thank you very much.

Best regards,

Alfredo

Re: Looping over a List and concatenating a string

HadleyMyers — Thu, 08 Oct 2020 06:40:50 GMT

Hi,

Searching the Concat function in the JMP Scripting Index (Help->Scripting Index), it can be seen that use of the double bar operator doesn't require parentheses. In case you weren't aware of it, the Scripting Index is a very powerful resource.