Objected Oriented Programming

#1 Posted: 2023/1/18 20:57:31

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Hello!

Brand new to SMath, and I was curious to know if there was a way to simulate creating objects with properties etc. For example, I have a car object that has a speed it's moving at and its weight.

#2 Posted: 2023/1/18 21:35:14

Alvaro

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Hi. Something like this?

obj_set_get.sm (11.63 KiB) downloaded 779 time(s).

Best regards
Alvaro.

2 users liked this post

sergio 2023/1/19 07:18:00, Mark R Harris 2023/1/20 04:09:00

#3 Posted: 2023/1/18 21:43:15

Artiom Lisin

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Hey Alvaro, that is really cool, I didn't know you could do that in SMath. Thank you

#4 Posted: 2023/1/19 15:33:01

Artiom Lisin

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Hey Alvaro,

I was testing out your methods with the inclusion of loops and it seems that I can't create a variable beforehand and assign it, it has to be empty. Do you know a way around this?

This is ultimately what I am trying to do with these functions, where I can get a mutable array of "Zones", each with their own properties (ie. area, x/y location etc.)

For reference I read through this thread as well: https://en.smath.com/forum/yaf_postst23278_String-to-Variable-Name--str2var.aspx
and tried some of the solutions posted on there but to no avail.

#5 Posted: 2023/1/19 16:28:07

Artiom Lisin

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I figured it out, just don't know a way around it. Since I'm calling str2num(output_i), it's giving me the value of that expression and not the variable itself.

#6 Posted: 2023/1/19 17:22:47

Alvaro

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Wrote
I figured it out, just don't know a way around it. Since I'm calling str2num(output_i), it's giving me the value of that expression and not the variable itself.

Yep. You need to call str2num at the worksheet level. Something like this

obj_set_get.sm (18.86 KiB) downloaded 720 time(s).

Also, I'm go to modify the code for accept set or collections.

Best regards.
Alvaro.

#7 Posted: 2023/1/19 21:32:59

overlord

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Group: Moderator

Jean's reply is not corresponding with question.

This algorithm is not creating an object.
It is only finding index of a key in data.

2 users liked this post

Alvaro 2023/1/19 22:06:00, Mark R Harris 2023/1/20 04:11:00

#8 Posted: 2023/1/19 22:08:17

Alvaro

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Group: User

Wrote
Jean's reply is not corresponding with question.

Thanks.

Updated.

obj_set_get V2.sm (46.64 KiB) downloaded 735 time(s).
obj_set_get V2.pdf (154.36 KiB) downloaded 429 time(s).

Best regards.
Alvaro.

2 users liked this post

overlord 2023/1/20 00:05:00, Mark R Harris 2023/1/20 04:12:00

#9 Posted: 2023/1/20 13:57:13

Artiom Lisin

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Group: User

Wrote

Wrote
Jean's reply is not corresponding with question.

Thanks.

Updated.

obj_set_get V2.sm (46.64 KiB) downloaded 735 time(s).
obj_set_get V2.pdf (154.36 KiB) downloaded 429 time(s).

Best regards.
Alvaro.

This is incredible work, it would be really cool to see this kind of feature built-in to SMath in the future.

#10 Posted: 2023/1/20 17:30:40

Davide Carpi

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Wrote
Jean's reply is not corresponding with question.

This algorithm is not creating an object.
It is only finding index of a key in data.

mod: Deleted since it was off-topic.

@Jean: please stay on topic.

If you like my plugins please consider to support the program buying a license; for personal contributions to me: paypal.me/dcprojects

#11 Posted: 2023/1/20 21:50:59

Artiom Lisin

0 likes in 6 posts.

Group: User

Wrote

Wrote
Jean's reply is not corresponding with question.

Thanks.

Updated.

obj_set_get V2.sm (46.64 KiB) downloaded 735 time(s).
obj_set_get V2.pdf (154.36 KiB) downloaded 429 time(s).

Best regards.
Alvaro.

I"ve been absolutely loving using this! Is there a way to disable the historical value saving? I'm trying to override some values rather than keep a record of them, I was thinking of going through a loop that check to see if the second column is zero and making a new submatrix without that row and calling it recursively until there are no 0 values left, however that presents a future problem when the value I want to set is 0. Is there a way around this?

#12 Posted: 2023/1/20 23:32:36

Alvaro

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... Is there a way to disable the historical value saving? ...

Hi. A version without values history.

obj_set_get V3.sm (53.66 KiB) downloaded 766 time(s).

Best regards.
Alvaro.

#13 Posted: 2023/1/21 03:23:13

Вячеслав Мезенцев

1,532 likes in 1,838 posts.

Group: Moderator

Maybe this plugin will be useful: Wiz Functions

It contains a set of functions for manipulating key and value pairs.

Russia ☭ forever, Viacheslav N. Mezentsev

SMath Forum

Objected Oriented Programming - Messages