While the classic solution followed rather close the concepts and design of the ancestors
Caché / IRIS allows a more modern approach to flexible/multidimensional properties

As you know in Caché / IRIS you have the possibility to define a property as Multidimensional as documented here:
https://docs.intersystems.com/iris20201/csp/docbook/DocBook.UI.Page.cls?KEY=GOBJ_proplit#GOBJ_proplit_multidim
and the explanation of how to use it
https://docs.intersystems.com/iris20201/csp/docbook/Doc.View.cls?KEY=GOBJ_proplit#GOBJ_proplit_multidim_values
Though the access is quite comfortable (in traditional COS sense) there are 2 main restrictions that hurt:
#1) It is not saved to disk unless your application includes code to save it specifically.
#2) It cannot be stored in or exposed through SQL tables
   there are some more
I'll show how to overcome these limits

During my last migration to IRIS I met this Compatibility parameter

• NullSubscripts    true

0 - Throw error when referencing a null subscript.
1 - Null subscript references do not throw an error.

The consequences are shocking. This was allowed:

USER>zw ^rcc
^rcc=0
^rcc("")="***"
^rcc("",1)="*,1"
^rcc(1,"")="1,*"
^rcc(1,2)="1,2"
^rcc(1,2,"")="1,2,*"

But SMP had no idea what is going on. 

And after switching off that flag this was still partialy visible, but read-only

USER>zw ^rcc
^rcc=0
^rcc(1,"")="1,*"
^rcc(1,2)="1,2"
^rcc(1,2,"")="1,2,*"

I just don't understand.

Hi developers!

You are experts in IRIS and know all tricks. The functionality of $ZF(-1,-2,-100, ......)
is nothing new to you And you know the limits of this functionality.
Both give you access to your local server command line environment. And that's it.

During my recent work on Tutorial - Working with %Query #1
I met a Class Property that is quite different from its same-named relatives.
It is there since 'ever' but is rarely used, Related doc doesn't help so much. 

Hello CCR Users,

The new CCR view page is now available to all users via an opt-in toggle a at the top and bottom of the view page.

We hope all users will give the new UI a try and provide us with any feedback that you have through your normal support channels.

Thank you to the beta users who have been using this page for a while, making sure its full release goes smoothly! You can always update your beta user status here.

Thanks!

Matt

This tutorial is a follow on to Working with %Query    
It was displaying the content of the input stream chopped in fixed-size chunks.
But often those streams are structured and have well-defined separators (e.g HL7)
So as a side subject of this tutorial, this chapter shows how to break a stream into PIECES.

It is exactly the same idea as the $PIECE() function for strings with some add-ons.

My previous article introduced you to SQL based Basic Class Query
where a clever wizard created all the required code for you and your essential
contribution was an SQL statement. 

Now we enter the real Custom Class Query thatprovides more freedom but
requires a deeper understanding of the mechanic behind the scene.
The full code example is again on GitHub

My previous article introduced you to the COS based Custom Class Query.
There were some features missing like more lines of the stream displayed
and numbered.

Hi Community, 

We are gathering again for the next Community Roundtable. Many of you asked for a roundtable about AL / ML, and we are delighted to bring such a roundtable to you!

Our invited expert from InterSystems: @tomdProduct Specialist - Machine Learning.

Join our 60-min discussion, prepare your questions, and use cases! There will be a short demo as well.

UPDATE: the recording is available here.

We are looking for Innovators!

We invite early stage startups to join Caelestinus digital health and FHIR startup incubator for the season 2023!

GREAT NEWS!!

Starting in April the InterSystems classroom course schedule will once again include public in-person classroom training in Cambridge.

Hi Community,

Please read this when you have the time and keep an open mind. Also, you are welcome to tell me it is a terrible idea.

The main reason for this post

If you look at NPM, it has 1.3 million packages. Now ask yourself, is this an achievement or a nightmare?
How many of those packages are no longer supported?
How many of those packages break compatibility on version changes?
How do you know which one to use?

Seeing results in SMP or Terminal

If you run the suggested queries from Terminal in  SQL shell you see:

Some technical background information

There is not just one class in this package:  rcc.gstream.cls but also rcc.gstreamT.cls

While rcc.gstream works with direct access to the stream globals, the *T version uses
a Process Private Global (PPG) as Temporary storage.
using  SELECT * FROM RCC.gstreamT WHERE RCC.useT('^jpgS')=1 and similar.

This might be an advantage for multiple access to the same stream in sequence,
The advantage is obvious: You have a personal snapshot in memory and no risk of
a conflict in access. This might be interesting if you work just on 1 specific stream.

A Minute Of Laughter on the Developer Community with #InterSystemsMemes.

Here is the Holiday edition of the memes sent/created by Developer Community members!
Enjoy the memes and don't forget to check our Winter Holiday challenges on Global Masters (available till Jan 2).

1. Meme author: @Udo Leimberger

Dear community!

It was an amazing 2022 with all of you. Great questions and articles around the whole year and this brings us the most valuable gifts -- wisdom and knowledge.
I want to thank you all for a great year full of fun and pleasure.

This community rocks.

Thank you Intersystems for being a strong partner to all of us.
I know some of my friends are now retired ( Gerd Nachtsheim *wave*) but I want to thank the whole team of Intersystems to make this year again a successful part of my life. Your products rock and I know I am a part of it next year.
God bless you all.
Happy New Year 

Hello, my name is Roger, I work in a big hospital in Brazil, I'm new to the MUMPS area, I was given an assignment to try to stabilize our MSM/MUMPS system, we have licenses for 1200 connections, however, the MSM starts having problems when we reach about 990 connections, the terminal has a timeout, it gets stuck. Looking at the MSM settings parameters I noticed the following default settings, could this be related?

Overview

Predictable storage IO performance with low latency is vital to provide scalability and reliability for your applications. This set of benchmarks is to inform users of IRIS considering deploying applications in AWS about EBS gp3 volume performance.

Summary

• An LVM stripe can increase IOPS and throughput beyond single EBS volume performance limits.
• An LVM stripe lowers read latency.

Today we have made the new CCR view page the default for CCR beta users.   

The option to toggle back to the classic UI is available in the navigation bar at the top and bottom of the page.

Please let us know of any issues you encounter or general feedback you have on the page, and thank you to everyone who tried the page in its initial release and provided us with great feedback already! 

Hi Community,

The day has arrived — InterSystems FHIR Healthtech Incubator Caelestinus Final Demo Day, November 30, 2022!

We started Caelestinus 8 months ago in March with 22 outstanding teams. Today 15 teams will pitch what they have achieved so far and their message to the market!  

I’m pleased to invite everyone to InterSystems FHIR Health Tech incubator Caelestinus Demo Day, which will happen in a hybrid online/offline mode: you can watch pitches online via www.caelestinus.tech starting at 2 p.m. CET or go in-person in IKEM — Institute for Clinical and Experimental Medicine, the largest Czech medical research and clinical hospital. 

InterSystems team is heading up to our next hackathon stop - European Healthcare Hackathon in Prague Nov 25-27.

Registration closes on November 20 - so don't hesitate to register. You can participate online or in-person! 

InterSystems will introduce the "Innovate with FHIR" challenge with prizes for the best use of InterSystems FHIR services.

VR ICU® is a participant of InterSystems FHIR startup incubator — Caelestinus. The article will tell you about our VR solution for HealthCare build with InterSystems FHIR Server. 

We are a technology startup Virtual Lab that develops solutions using advanced VR/AR technologies. VR ICU® is a training platform for medical staff in ICU, which was created during the Covid era for the needs of hospitals.

Benefits of cooperation with InterSystems

Our VR ICU® solution responds to practice needs and is developed in collaboration with hospitals.

Hello,

Thank you for reading this question, and thank you for your time and replies.

I was wondering which ways, tools, mechanisms, or vias would you recommend to teach to kids, teens, adults, being your sons / daughters or not; your passion or likelihood for programming and computers?

I know there are some programming free games like the following ones:

https://wintrmut3.itch.io/maelstromexe

https://niandra.itch.io/just-add-eggs

https://jaywee1115.itch.io/code-ed

https://ratking.itch.io/chipcode

Even more, there are some sites which propose you small challenges:

https://www.codewars.

Try to register via the Global Master Challenge to the event below, but it said the challenge is no longer available.

Let's meet virtually at our Third Community Roundtable! This will be a 60-min discussion on a given topic: Developing with Python. 

Register through >> this Global Masters challenge << 

If you want prepare yourself or test a programmer for a job, this is my tip: https://www.hackerrank.com

Hi Community, 
Let's meet virtually at our first Community Roundtable! This will be a 45-minfriendly discussion on a given topic: VSCode vs Studio. 
Imagine that we just gathered together to share our thoughts, experiences, tips, and tricks. If you want to discuss specific questions within a given topic - please share them in the comments.
Watch recording:

Starting today, we have release the new CCR view page to beta users! 

As the view page contains a lot of functionality, we are giving users the ability to toggle their session between the new UI and the classic UI view pages.   Your sessions will default to the classic UI for now, but beta users will see a "View in New UI" button in the nav bar for Tier 0 and 1 CCRs:

Similarly, the new UI page will have a "View in Classic UI" button at the top:

At any time, disabling your beta user flag will return you to the Classic UI for viewing CCRs.

Hello,

First of all thanks for reading this post and thanks for replying:

I think it could be obvious or a little bit naive but I was wondering if a software developer needs as a must or should get his/her own personal laptop or computer, appart the one from their own bussiness or company?

What laptop or computer would you recommend for personal use? For general purpose: programming, leisure, surfing the net, etc.

Thanks for your replies.

Greetings.

What advice would you give someone who is new to IT?

Someone who wants to become a developer?

Which code to start learning first?