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Re: In Squeak SmallTalk, what can I do to display a number in any hex I want?

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K K Subbu

Re: In Squeak SmallTalk, what can I do to display a number in any hex I want?

On Monday 23 October 2017 10:40 AM, RedTigerFish wrote:
> Transcript show: 'aa='. Transcript show: 23124234 * 431213; cr.
>
> The output is aa=9971470315842 9971470315842 is a decimal number. What
> can I do to display a number in any hex I want ??

Transcript show: (23124234 * 431213) hex; cr

You can discover such functions by giving an example in Method Finder.
For instance 23 is represented as 16r17 in hex, so:

23 . '16r17'

will reveal the method. For any radix, see printStringBase: method.

HTH .. Subbu
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RedTigerFish

Re: In Squeak SmallTalk, what can I do to display a number in any hex I want?

Hello, thanks for your answer.

Here is my thinking:

Transcript show: (23124234 * 431213) hex; cr

The above code only displays a decimal in hexadecimal which is base-16.
Now I want a decimal number to be displayed in base-17 or 20 or 100 or 250
or any positive integer.
How can I do that? Is that possible in Smalltalk?

I tried "Method Finder" and typed in Selector Browser "23 . '17r16' , only
to get the warning: no single method does that function.

Any method I can solve this problem ?

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K K Subbu

Re: In Squeak SmallTalk, what can I do to display a number in any hex I want?

On Monday 23 October 2017 04:40 PM, RedTigerFish wrote:

> Hello, thanks for your answer.
>
> Here is my thinking:
>
> Transcript show: (23124234 * 431213) hex; cr
>
> The above code only displays a decimal in hexadecimal which is base-16.
> Now I want a decimal number to be displayed in base-17 or 20 or 100 or 250
> or any positive integer.
> How can I do that? Is that possible in Smalltalk?

Yes, with printStringBase: method

Transcript show: ((23124234 * 431213) printStringBase: 17); cr

HTH .. Subbu
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RedTigerFish

Re: In Squeak SmallTalk, what can I do to display a number in any hex I want?

Thanks. That is what I want.

But when I type:

Transcript show: ((2423460) printStringBase: 250); cr.

A "MessageNotUnderstood" window pops up.

Is there a maximal base for displaying numbers?

-----
Dig, dig where you are,
Down below's well.
Let those that walk in darkness shout,
Down below's hell.
--
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Let those that walk in darkness shout,
Down below's hell.

Bert Freudenberg

Re: In Squeak SmallTalk, what can I do to display a number in any hex I want?

On Mon, Oct 23, 2017 at 1:27 PM, RedTigerFish <[hidden email]> wrote:

Thanks. That is what I want.

But when I type:

Transcript show: ((2423460) printStringBase: 250); cr.

A "MessageNotUnderstood" window pops up.

Is there a maximal base for displaying numbers?

Yes, the maximum base is 36, because we only use 0-9 and A-Z as digits:

$Z digitValue

=> 35

For larger bases you would have to invent your own digits.

Even digits beyond F (hexadecimal 15) are non-standard, and are allowed more as a syntactic curiosity than as something with a real application.

The only somewhat commonly used bases are 2, 8, 10, 13, and 16, as far as I know.

- Bert -

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Louis LaBrunda

In Squeak SmallTalk, what can I do to display a number in any hex I want?

In reply to this post by RedTigerFish

Hi,

I get the feeling you are asking the wrong question. Can you tell us more about what you are
trying to do.

Lou

On Mon, 23 Oct 2017 04:27:15 -0700 (MST), RedTigerFish <[hidden email]> wrote:

>Thanks. That is what I want.
>
>But when I type:
>
>Transcript show: ((2423460) printStringBase: 250); cr.
>
>A "MessageNotUnderstood" window pops up.
>
>Is there a maximal base for displaying numbers?
>
>
>
>
>
>-----
>Dig, dig where you are,
>Down below's well.
>Let those that walk in darkness shout,
>Down below's hell.

--
Louis LaBrunda
Keystone Software Corp.
SkypeMe callto://PhotonDemon

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cbc

Re: In Squeak SmallTalk, what can I do to display a number in any hex I want?

In reply to this post by Bert Freudenberg

On Mon, Oct 23, 2017 at 10:32 AM, Bert Freudenberg <[hidden email]> wrote:

The only somewhat commonly used bases are 2, 8, 10, 13, and 16, as far as I know.

- Bert -

Hi.

I haven't run across a reason to use base 13. What domain was that in? Just curious,

cbc

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Bert Freudenberg

Re: In Squeak SmallTalk, what can I do to display a number in any hex I want?

On Tue, Oct 24, 2017 at 5:14 PM, Chris Cunningham <[hidden email]> wrote:

On Mon, Oct 23, 2017 at 10:32 AM, Bert Freudenberg <[hidden email]> wrote:

The only somewhat commonly used bases are 2, 8, 10, 13, and 16, as far as I know.

- Bert -

Hi.

I haven't run across a reason to use base 13. What domain was that in? Just curious,
cbc

The answer is 42.

;)

- Bert -

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Ben Coman

Re: In Squeak SmallTalk, what can I do to display a number in any hex I want?

On Tue, Oct 24, 2017 at 11:25 PM, Bert Freudenberg <[hidden email]> wrote:

On Tue, Oct 24, 2017 at 5:14 PM, Chris Cunningham <[hidden email]> wrote:
On Mon, Oct 23, 2017 at 10:32 AM, Bert Freudenberg <[hidden email]> wrote:

The only somewhat commonly used bases are 2, 8, 10, 13, and 16, as far as I know.

- Bert -

Hi.

I haven't run across a reason to use base 13. What domain was that in? Just curious,
cbc

The answer is 42.

;)

- Bert -

And Adams swears this was never planned. Pure co-incidence that it worked out that way. Hmmmmmm.....?

cheers -ben

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Bert Freudenberg

Re: In Squeak SmallTalk, what can I do to display a number in any hex I want?

On Tue, Oct 24, 2017 at 11:06 PM, Ben Coman <[hidden email]> wrote:

On Tue, Oct 24, 2017 at 11:25 PM, Bert Freudenberg <[hidden email]> wrote:
On Tue, Oct 24, 2017 at 5:14 PM, Chris Cunningham <[hidden email]> wrote:
On Mon, Oct 23, 2017 at 10:32 AM, Bert Freudenberg <[hidden email]> wrote:

The only somewhat commonly used bases are 2, 8, 10, 13, and 16, as far as I know.

- Bert -

Hi.

I haven't run across a reason to use base 13. What domain was that in? Just curious,
cbc

The answer is 42.

;)

- Bert -

And Adams swears this was never planned. Pure co-incidence that it worked out that way. Hmmmmmm.....?
cheers -ben

Yep. For those not yet in on the joke:

In Douglas Adams "Hitchhiker" trilogy the number 42 plays an important role, and at some point it was defined as 6x9. Intended as a joke, it turned out that this is actually correct in base 13, and can be written easily in Smalltalk, but not most other computer languages:

13r6 * 13r9 = 13r42

=> true

- Bert -

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