Is there a way to create a number sequence with a letter prefix, such as X101, X102, X103…?
Oops. two other responses in the time I took to respond 
Too many replies? Ha-ha… There are never too many replies! 
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Thanks Mark.
Don’t know if you remember, we met briefly at AU last year (I used to work for aecom)
All of these examples are great! This community is pretty awesome.
:mrgreen:
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For completeness… 
Yes I do! Will you be at AU this year? I’m going to try organise an evening of drinks with the usual suspects of the dynamo forum. Will be good getting us all in one room/bar.
@Dimitar Venkov - always showing us up 
Dimitar’s approach is so uncomplicated, it actually makes me feel stupid
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If I remember correctly, I originally saw Andreas use this method. Also I believe I’ve learned more things from you, Vikram than the other way around 
Now what would be fun is to try to achieve the opposite and try to find the most complicated way to chain strings and numbers together!
Hello All,
That’s the power of our DesignScript engine.
If you use Code Block more often then Nodes, you will definitely feel the power of DesignScript.
Thanks a lot everyone for awesome replies.
Keep Using Dynamo!
Thanks,
Ritesh
There is always one that has to get the pythons script out :).
It is good to see all the variations to this fairly simple idea.
Great Topic! THANKS to everyone! How about suffix? for example, how to add “mm” to a list 9, 12.7, 3, 2.5, 5, 7, 1.25, make a new list 9mm, 12.7mm, 3mm, 2.5mm, 5mm, 7mm, 1.25mm?
I found a way below, is there any better one?
Ignoring the trailing zeros on converting to a string.
Adding a suffix…
Slightly off topic, but add leading zero:
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