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Advent of code 2021 in objectscript classes

What's new in this version

Changes in Base.cls:

  1. Parameter Folder now point to a docker files folder:
  2. Add GetInputToArray class method
    1. Load an array with the records from the data file.
    2. Remove control characters from input, due to difference in default line terminator between windows and linux

Changes in the days code:

  1. Using the GetInputToArray instead of GetInput

Quality Gate Status
Reliability Rating

License: MIT


This is the source code for my advent of code 2021 using objectscript classes.


From Advent Of Code:
Advent of Code is an Advent calendar of small programming puzzles for a variety of skill sets and skill levels that can be solved in any programming language you like. People use them as a speed contest, interview prep, company training, university coursework, practice problems, or to challenge each other.


Make sure you have git,
and if you wish to run inside a docker then make sure you also have Docker desktop installed,
or if you want to install using zpm then make sure you have ObjectScript Package Manager installed in your IRIS server.

Installation with zpm

in the namespace prompt:


inside zpm shell:

install aoc-2021-uvg

Installation inside a docker

Clone/git pull the repo into any local directory

$ git clone https://github.com/uvg/AdventOfCode2021Uvg.git

Open the terminal in this directory and run:

$ docker-compose build
  1. Run the IRIS container with your project:
$ docker-compose up -d

How to Test it

Put all your input data into files in a specific folder, and set the Folder parameter inside Class AOC2021.Base

Open IRIS terminal. For docker:

$ docker-compose exec iris iris session iris

And enter the following command to run the first day both parts:

USER>do ##class(AOC2021.Day01).Run()
  • Extended Run parameters: do ##class(AOC2021.Day01).Run(verbose,part) with
    verbose = 1 ; will display some messages, Otherwise will just print the answer
    part = 1,2 ; run only first or second part of example, empty/0 will run both parts
; to run all exercises use
for day=0:1:25 set zday=day set:zday<10 zday=0_day do $classmethod("AOC2021.Day"_zday,"Run")
; to run all exercises while printing message use
for day=0:1:25 set zday=day set:zday<10 zday=0_day do $classmethod("AOC2021.Day"_zday,"Run",1)
; to run all exercises part 1 use
for day=0:1:25 set zday=day set:zday<10 zday=0_day do $classmethod("AOC2021.Day"_zday,"Run",,1)
; to run all exercises part 2 use
for day=0:1:25 set zday=day set:zday<10 zday=0_day do $classmethod("AOC2021.Day"_zday,"Run",,2)

How to start coding

The script in Installer.cls will import everything you place under /src into IRIS.

What’s inside the repository


The simplest dockerfile which starts IRIS and imports code from /src folder into it.
Use the related docker-compose.yml to easily setup additional parametes like port number and where you map keys and host folders.


Settings file to let you immedietly code in VSCode with VSCode ObjectScript plugin)


Config file if you want to debug with VSCode ObjectScript

Read about all the files in this artilce

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Made with
zpm install aoc-2021-uvg download archive
0.0.206 Jan, 2022
ObjectScript quality test
Works with
InterSystems IRISInterSystems IRIS for Health
First published
05 Jan, 2022
Last checked by moderator
27 Jun, 2023Works