- Code: Select all
`a = [ [1, [2,3,4]] , [2, [7,8,9]] ]`

Then I set

- Code: Select all
`a[0][0] = 37`

expecting to get

- Code: Select all
`a = [ [37, [2,3,4]] , [2, [7,8,9]] ]`

but instead I got

- Code: Select all
`a = [ [37, [2,3,4]] , [37, [7,8,9]] ]`

What am I doing wrong?

Thanks