Thx Ian,

So basically it's because we allocate new array in version without cap, 
right?  Because it outgrows current cap. So pointer from slice b is 
pointing to new slice (i've checked they have different addresses for first 
element) different from a.
And in version with cap=10 we still append to the same array as there is no 
relocation, that's why we have same elements in both slices (they point to 
the same array). Right?

W dniu niedziela, 3 lipca 2016 15:59:33 UTC+2 użytkownik Ian Lance Taylor 
napisał:
>
> On Sun, Jul 3, 2016 at 4:27 AM,  <rog...@gmail.com <javascript:>> wrote: 
> > Can anyone ELI5 it to me, please ? Why if we remove cap result is 
> different 
> > ? I don't understand that. 
>
> https://blog.golang.org/slices 
>
> Ian 
>

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