Discussion
John Murray · Mar 3, 2016
Anyone using Visual Studio Code?

Is anyone in the fine community of developers who work with ISC technologies looking at Microsoft's Visual Studio Code offering?

One of Bill McCormick's recent posts about Atelier referred to Visual Studio being considered the best IDE. Granted, Code is far less of a tool than VS, and probably always will be. But it claims to be open source and cross-platform, i.e. Linux and OS X as well as Windows.

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Hi, Community!

Have a question for general discussion. 

In ObjectScript we have cls for classes and mac code, which both compile into int code. 

Is there any reason when you use mac instead of cls  for non-persistent classes?

For me the benefits for cls are:

1. Inheritance and other OOP features

2. Auto-documented code 

For mac one visible benefit is easier call in terminal:

do method^Utils(p1,p2)

vs

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Hi Community!

Sometimes I meet a method which accepts 10+ parameters.

And often I need only the 8th parameter  to  pass. And I call the method something like:

do ##class(Some.Feature).Method(,,,,,,,"flag")

And I don't like this method when I call it like this cause, you know, often I just miss the number of commas and raise some other flag I wanted.

How do you avoid this situations? 

If you meet such a code, how do you call it and sure that you didn't miss the number of ","?

What is a good number of parameters in a method and f you need to pass more parameters in a method what do you do?

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Hi Community!

There are two general ways to execute arbitrary SQL  in serverside ObjectScript code: EmbeddedSQL and ObjectScript SQL a.k.a. Dynamic SQL.

E.g. if we want to get the value of the property of instance with a certain ID using SQL we can do:

&sql(SELECT Name INTO :name FROM Sample.Person WHERE ID=1)

write name

Same result with %SQL.Statement:

set rs=##class(%SQL.Statement).%ExecDirect(,"SELECT Name as name FROM Sample.Person where ID=1")
  do rs.%Next()
  write rs.name

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Hi Community, 

We've launched a nice competition on Global Masters under the "Season of Giving" campaign, which I hope will bring inspiration to all of you!

We inviting you to share your task ideas for new applications that could be developed on InterSystems Technology. Let's enrich our Open Exchange apps gallery with great applications in 2021!

 

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Hi Developers!

Often we need to use relatively small arrays with constants, static arrays in algorithms, etc where we need to do something with each element of an array. There are several ways to deal with it in ObjectSctipt. 

Previously I used to use globals, locals, PPG for this but not so long time ago figured out that %List is a way too handy.

Indeed, suppose we have an array of months and need to set up and use it in our code.

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Discussion
Evgeny Shvarov · Sep 28, 2020
%Status usage in ObjectScript

Hi developers!

Want to discuss with you the case of %Status.

If you familiar with ObjectScript you know what is it. I'd love to hear the history of the case why it had appeared in ObjectScript but it turned out that almost every system/library classmethods return %Status and there is a whole set of tools to deal with it.

What is does it gives you the responsibility to check the value or %Status of every system method you call.

E.g. if you save the data of the persistent class,  you should never call like this:

do obj.%Save()

you need to call:

set sc=obj.%Save()

if $$$ISERR(sc) do // something or quit.

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Hi guys!

Suppose you developed a tool, framework, library on InterSystems ObjectScript for InterSystems Data Platform, share it via Open Exchange and want people to install it. 

What is the best strategy if it is a library and supposed to be called from different namespaces?

Here are the following thoughts:

1. Tool's developer should be able to use globals to read/store data the tool needs.

2. Tool's consumer should be confident, that the thing he/she installs will not harm the application's data.

3. A tool should be callable from any application's namespace.

4. Tool's installation(in general) should not request manual security changes (e.g. grant the write access to IRISLIB) and %YourClass is not an option.

5. It's easy to uninstall the tool - just delete the namespace/database (maybe delete some web-apps too).

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Hi Devs!

A few months ago I raised a discussion on the naming convention for ZPM modules.

And you free to put your name or your organization name for the packages you want to have your personal or company's brand.

But if you contribute to community, we suggested to have "community." package for all such libraries.

But the name is too long.

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Application licensing enables InterSystems application partners to take advantage of Caché’s licensing capabilities for their own licensing purposes.

Caché manages customer application licenses just as it does Caché/Ensemble and InterSystems application licenses, maintaining usage counts and acquiring and returning user licenses as needed.

Application licenses consumed by a process or a CSP session are automatically released along with the Caché license consumed by the process or session when a process exits, halts or is deleted from the process table, or when a CSP session times out or is deleted.

More in docs.

Do you use this feature? If so, how?

I'm especially interested in license validation and general workflows?

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Hi Developers!

InterSystems IRIS stores everything in globals and if we use ObjectScript classes to persist data class documents globals it uses in storage. But if you use globals for calculations, temporary storages, for special indexes or for some other purposes - how do you document it?

Possible options which come to my mind:

1. Macro

#define Array ^MyGlobal

usage:

s $$$Array(1)=1

2. Class parameter

Parameter Array ="^MyGlobal";

Usage:

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Discussion
Eduard Lebedyuk · Jan 10, 2021
Code Golf: Diamonds
To start the year let's have a round of CodeGolf!

You know the drill. Shortest solution wins.

Print a size ascending range of Diamonds using the numbers 1 to 9, ranging from size 1 to size N, each diamond separated by a blank line.

A size 1 diamond should look like this, a single centered 1:

         1

With the size N=9 diamond looking like this:

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I'm not sure what the purpose of this is, but the Management Console causes the browser to refresh periodically. If you're in a form or an editor such as the DTL or Routing Rule editors, you may lose work unless you save frequently. This did not occur in Caché 2018 and earlier releases.

I've had a couple of incidents where I've created a number of rules in the DTL editor, answered the phone or stepped away for a few minutes, then come back to find any work since the last save erased.

I've noticed this in both 2019 and 2020 releases of IRIS.

Heads up!

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Hello All,

I have been using IRIS / Ensemble for over a decade and appreciate lot of it's functionalities and features, however besides having a UI of 80's era (which doesn't bother me), what I believe where IRIS is lacking is lack of out of the box connectors (services/operations).

If we look at IRIS's competitors for eg Mulesoft, Talend, Boomi they all have hundreds of pre-built connectors for major applications like Salesforce, SAP etc and cloud services like Azure, AWS etc to store and retrieve information and data.

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Hi,

we're planning some work on our SQL Query Plan functionality for a future release of InterSystems IRIS and are interested to hear how you're using them today, or what'd keep you from using them. Rather than try and fit everything in a rigid survey, I thought a simple thread on our beloved DC might also reveal some use patterns that we support or could do a better job on. 

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Hello!

First of all, let me state that I am no senior InterSystems expert. 

In my organization, we have a HealthShare Health Connect setup where each namespace has one code database and one data database, which are both actively mirrored. We have two nodes in the mirror.

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This is a lesson learned, which I would like to share with community.  


Recently I ran into an issue, where I was using %ConstructClone and it kept cloning extra records, which were not needed.  The record for which I was trying to run a clone had many-to-one relationships.  

The solution to this issue was using param -1.  If you run %ConstructClone(-1) it will not clone relationships, but rather just clone single oref as desired in this case.


I hope this information helps someone who is working with similar records.

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