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How does one create an array of points?

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Michael Rice

How does one create an array of points?

I've been trying to create an array of points (in Squeak 5) but am failing badly. See below: first part => what I get when I exec "print it" on the first part. Guidance please.

#(1@1 2@2) => #(1 #@ 1 2 #@ 2)

#((Point x: 1 y: 1) (Point x: 2 y: 2)) => #(#(#Point #x: 1 #y: 1) #(#Point #x: 2 #y: 2))

#(12 'b' $c) => #(12 'b' $c)

#(12 'b' $c 1@1) => #(12 'b' $c 1 #@ 1)

#(12 'b' $c (1@1)) => #(12 'b' $c #(1 #@ 1))

#(12 'b' $c (Point x: 1 y: 1)) => #(12 'b' $c #(#Point #x: 1 #y: 1))

Point x:1 y: 1 => 1@1

(Point x:1 y: 1) => 1@1

#((Point x: 1 y: 1)) => #(#(#Point #x: 1 #y: 1))

#(1@1) => #(1 #@ 1)

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Ron Teitelbaum

RE: How does one create an array of points?

Hi Michael,

Good question!

{Point x:1 y:1. Point x:2 y:2.}

It’s not obvious! Notice the periods after the end of each element.

All the best,

Ron Teitelbaum

From: [hidden email] [mailto:[hidden email]] On Behalf Of Michael Rice
Sent: Monday, June 20, 2016 11:21 AM
To: SqueakList
Subject: [Newbies] How does one create an array of points?

I've been trying to create an array of points (in Squeak 5) but am failing badly. See below: first part => what I get when I exec "print it" on the first part. Guidance please.

#(1@1 2@2) => #(1 #@ 1 2 #@ 2)

#((Point x: 1 y: 1) (Point x: 2 y: 2)) => #(#(#Point #x: 1 #y: 1) #(#Point #x: 2 #y: 2))

#(12 'b' $c) => #(12 'b' $c)

#(12 'b' $c 1@1) => #(12 'b' $c 1 #@ 1)

#(12 'b' $c (1@1)) => #(12 'b' $c #(1 #@ 1))

#(12 'b' $c (Point x: 1 y: 1)) => #(12 'b' $c #(#Point #x: 1 #y: 1))

Point x:1 y: 1 => 1@1

(Point x:1 y: 1) => 1@1

#((Point x: 1 y: 1)) => #(#(#Point #x: 1 #y: 1))

#(1@1) => #(1 #@ 1)

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Joseph Alotta

Re: How does one create an array of points?

In reply to this post by Michael Rice

a := Array new: 2.
a at: 1 put: (Point x: 1 y: 1).
a at: 2 put: (Point x: 2 y: 2).

a => {1@1 . 2@2}

> On Jun 20, 2016, at 9:41 AM, Michael Rice [via Smalltalk] <[hidden email]> wrote:
>
> I've been trying to create an array of points (in Squeak 5) but am failing badly. See below: first part => what I get when I exec "print it" on the first part. Guidance please.
>
> #(1@1 2@2) => #(1 #@ 1 2 #@ 2)
>
> #((Point x: 1 y: 1) (Point x: 2 y: 2)) => #(#(#Point #x: 1 #y: 1) #(#Point #x: 2 #y: 2))
>
> #(12 'b' $c) => #(12 'b' $c)
>
> #(12 'b' $c 1@1) => #(12 'b' $c 1 #@ 1)
>
> #(12 'b' $c (1@1)) => #(12 'b' $c #(1 #@ 1))
>
> #(12 'b' $c (Point x: 1 y: 1)) => #(12 'b' $c #(#Point #x: 1 #y: 1))
>
> Point x:1 y: 1 => 1@1
>
> (Point x:1 y: 1) => 1@1
>
> #((Point x: 1 y: 1)) => #(#(#Point #x: 1 #y: 1))
>
> #(1@1) => #(1 #@ 1)
>
>
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Michael Rice

Re: How does one create an array of points?

In reply to this post by Ron Teitelbaum

Weird, but what do I know.

I see that this (a period separating each from the next) also works:

{1@1. 2@2. 3@3} => {1@1 . 2@2 . 3@3}

Thanks, all.

On Mon, Jun 20, 2016 at 11:29 AM, Ron Teitelbaum <[hidden email]> wrote:

Hi Michael,

Good question!

{Point x:1 y:1. Point x:2 y:2.}

It’s not obvious! Notice the periods after the end of each element.

All the best,

Ron Teitelbaum

From: [hidden email] [mailto:[hidden email]] On Behalf Of Michael Rice
Sent: Monday, June 20, 2016 11:21 AM
To: SqueakList
Subject: [Newbies] How does one create an array of points?

I've been trying to create an array of points (in Squeak 5) but am failing badly. See below: first part => what I get when I exec "print it" on the first part. Guidance please.

#(1@1 2@2) => #(1 #@ 1 2 #@ 2)

#((Point x: 1 y: 1) (Point x: 2 y: 2)) => #(#(#Point #x: 1 #y: 1) #(#Point #x: 2 #y: 2))

#(12 'b' $c) => #(12 'b' $c)

#(12 'b' $c 1@1) => #(12 'b' $c 1 #@ 1)

#(12 'b' $c (1@1)) => #(12 'b' $c #(1 #@ 1))

#(12 'b' $c (Point x: 1 y: 1)) => #(12 'b' $c #(#Point #x: 1 #y: 1))

Point x:1 y: 1 => 1@1

(Point x:1 y: 1) => 1@1

#((Point x: 1 y: 1)) => #(#(#Point #x: 1 #y: 1))

#(1@1) => #(1 #@ 1)

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Beginners mailing list
[hidden email]
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Ron Teitelbaum

RE: How does one create an array of points?

From: Michael Rice
Sent: Monday, June 20, 2016 11:44 AM

Weird, but what do I know.

I see that this (a period separating each from the next) also works:

{1@1. 2@2. 3@3} => {1@1 . 2@2 . 3@3}

[Ron Teitelbaum] Ahh Yes. Even better.

Thanks, all.

On Mon, Jun 20, 2016 at 11:29 AM, Ron Teitelbaum <[hidden email]> wrote:

Hi Michael,

Good question!

{Point x:1 y:1. Point x:2 y:2.}

It’s not obvious! Notice the periods after the end of each element.

All the best,

Ron Teitelbaum

I've been trying to create an array of points (in Squeak 5) but am failing badly. See below: first part => what I get when I exec "print it" on the first part. Guidance please.

#(1@1 2@2) => #(1 #@ 1 2 #@ 2)

#((Point x: 1 y: 1) (Point x: 2 y: 2)) => #(#(#Point #x: 1 #y: 1) #(#Point #x: 2 #y: 2))

#(12 'b' $c) => #(12 'b' $c)

#(12 'b' $c 1@1) => #(12 'b' $c 1 #@ 1)

#(12 'b' $c (1@1)) => #(12 'b' $c #(1 #@ 1))

#(12 'b' $c (Point x: 1 y: 1)) => #(12 'b' $c #(#Point #x: 1 #y: 1))

Point x:1 y: 1 => 1@1

(Point x:1 y: 1) => 1@1

#((Point x: 1 y: 1)) => #(#(#Point #x: 1 #y: 1))

#(1@1) => #(1 #@ 1)

_______________________________________________
Beginners mailing list
[hidden email]
http://lists.squeakfoundation.org/mailman/listinfo/beginners