The topic of for/while loop performance in Caché ObjectScript came up in discussion recently, and I'd like to share some thoughts/best practices with the rest of the community. While this is a basic topic in itself, it's easy to overlook the performance implications of otherwise-reasonable approaches.

24 21
3 9.1K

Hi! Today I would like to talk about one of the most important architectural patterns in Angular.

The pattern itself is not related to Angular directly, but as Angular is component-driven framework, this pattern is one of the most essential for building modern Angular applications.

Container-Presentation pattern

It is believed that good components should be small, focused, independent, testable and most important - reusable.

6 0
0 865
Announcement
· May 21, 2018
How is your code health

As a developer, usually I'm concerned about how my code health is, and how the other coders code can affect to my own work. And I'm quite sure most of us feel very similar.

In our company we use a Static Code Analysis tool to analyze code for different languages to ensure we are writing high quality and easily maintainable code by following a few best practices in terms of code structure and content. And the question was: why should be different for Caché ObjectScript language?

6 3
4 1.1K

When you install an IRIS or Caché instance on Windows Server, you'll usually need to install it under a specific user account that has network access permissions. This is very handy when you needs to access network resources for creating files or directly accessing printers.

TL;DR: see key takeaways at the bottom!

5 0
0 345

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?

3 27
1 1.5K

A SOLID Design in Cache Object

In this session, we will discussing SOLID Principle of Programming and will implement in a example.
I have used Cache Object Programming Language for examples.
We will go step by step to understand the requirement, then what common mistakes we use to do while designing, understanding each principles and then complete design with its implementation via Cache Objects.

3 7
2 468
Announcement
· Sep 10, 2019
Code Golf Index

Code golf is a type of recreational computer programming competition in which participants strive to achieve the shortest possible source code that implements a certain algorithm.

Here's a list of Code Golf competitions we had on Developers Community.

And some interesting challenges:

Did I miss something? Add more challenges in comments.

2 0
0 433
Article
· Jul 19, 2022 4m read
Caution with Mixing OO and SQL

Mixing Object syntax with SQL is one of the nice features in Object Script. But in one case, it gave strange results, so I decided to isolate the case and describe it here.

Let's say you need to write a classmethod that updates a single property on disk. Usually, i would write that using SQL like this :

2 5
0 268

Hi community!

Is it possible generate HTML documentation to my project ObjectScript classes (.cls)?

In Java we use Javadoc to do it. Javadoc get class comments and java metadata information and when I execute javadoc -d doc src\*, I get whole html documentation to my classes. Has IRIS something like javadoc? Is it documatic? If yes, how can I use it?

1 12
2 594
Discussion
· Mar 19, 2019
Rule to validate SQL syntaxis

Hi! We have received a request to create a new rule on CachéQuality to identify when a developer uses double quotes (" ") within any SQL statement.

We have been asked many times about SQL validation rules, and we would like to open a debate to allow everyone discuss what would you like to be checked on a SQL statement.

Current examples are for basic situations:

0 13
0 541

Hello everyone,

I have an issue with using "Open" function.

My goal is to execute a shell script with parameters like as:

/trak/FRXX/config/shells/transportIDE.sh "login|password|NOMUSUEL|PRENOM|NOMDENAISSANCE|1234567891320|199999999999999999999999|09%2099%2099%2099%2099|31%2F12%2F1999|242%20IMPASSE%20DES%20MACHINCHOOOOOOOOSE%20||99999|SAINT%20BIDULETRUC%20DE%20MACHINCHOSE|isc%24jhu|123456|123456798"" 2>&1"

But when some parameters are too long, I have a <NAMEADD> error.

0 4
0 298

Say I have a property in a persistent class that stores list of colours and I would like to query that field and return a list and be able to loop that list to get individual colours how will l go about achieving this I have tried something like this but its not working as expected

 &sql(SELECT colour INTO :colourList FROM favouritecolours)
 While (SQLCODE = 0) 
{
 for i=1:1:$LENGTH($P(colourList,","))
 {
 set fvalue=$P(colourList,",",i) 
write "the first"_fvalue,i, 
} 
}
0 1
0 468

Hi! I am working on a project where I use record map to transform a flat file and split it into two output text file and in the future will need to split four output files.

I only want to use one target business operations instead of multiple. Is there a way to set the output file and the target folder path in my business process class?

Any advice on how I can achieve this or is this possible? Thanks!

0 5
0 391

Hi guys,

I have never used regular expressions with caché object script before, so I've read through the documentation, but I am struggling with things that I'd like some help on.

My need is to identify specific html tags and transform them out to something else. Example:

I need to identify those guys in a wider string:
"<span style=\""font-family: '';font-weight: bold;\"" >BOLD TEXT</span>"
"<span font-style:italic;\" >ITALIC TEXT</span>"

0 4
0 459