How to delete an element in table instead of using

x = {10,40,70}
x[2] = nil

Because it will make an element empty

x = {10,nil,70}

Expected result is

x = {10,70}

Use del(x, x[2]) and it'll delete item 2.

Thanks, but it seems del(x, 2) is right

I don't think it is. del(x, x[2]) means find the element that is at the second second index and delete that element. Note that this will give the wrong value if there are repeated values and you want to delete the not last one

x={10,20,30,40,30}
del(x,x[5])
foreach(x,print)

this outputs

10
20
40
30

which is not what was expected

x={10,20,30,40,30}
del(x,2)
foreach(x,print)

this returns the entire list unchanged.

10
20
30
40
30

What I think you actually want is deli (delete index)

x={10,20,30,40,30}
deli(x,5)
foreach(x,print)

gives

10
20
30
40

I believe this is the expected result.

@SquidLight Ha! I totally forgot deli() was a thing! So handy.