help needed regarding conversion of hex to binary

> On 12 Sep 2017, at 14:47, Ben Coman <[hidden email]> wrote:
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> On Tue, Sep 12, 2017 at 2:55 AM, Casimiro de Almeida Barreto <[hidden email]> wrote:
> Is there a (easy and ready) way to convert hexa to binary. I mean, convert data that was transformed
>
>     x := myData asByteArray hex.
>
> back to binary?
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>
> I thought I'd try what usually works...  World > Tools > Finder > Examples
> First to test what we know...    
>       #(9 10 11 12) asByteArray  .  '090a0b0c'
> results in  #hex
>
> but the reverse...
>       '090a0b0c' .  #(9 10 11 12) asByteArray  .  
> doesn't show any result,
> so perhaps there is no easy way.
>
> But this might give you a starting point...
>    hexString := #(9 10 11 12) asByteArray hex.
>    (NumberParser on: '16r', hexString) nextInteger asByteArray " ==>  #[9 10 11 12]"
>
> cheers -ben