How to concatenate two tuples?

Question

I want to concatenate two tuples in DolphinDB in the way similar to concatenating vectors.

For example, I have two tuples:

a=(1,2,3)

and

b=(4,5,6)

and I attempted to use

join

to obtain

re=(1,2,3,4,5,6)

However, the output is (1,2,3,(4,5,6)),which is same as the result of

 a.append!(b)

How could I modify my script?

DarkBee · Accepted Answer · 2025-07-30 10:13:07Z

0

The join will treat b as a single item and that's why the result is a nested tuple. You have to convert a and b to vectors, join them and then convert back to tuple.

a = (1,2,3) b = (4,5,6) 
re = tuple(join(vector(a), vector(b)))

edited Jul 30 at 10:13

DarkBee

14.4k9 gold badges86 silver badges134 bronze badges

answered Jul 30 at 10:06

Benjamin

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