Tech - March 02, 2020

SSH and Password Managers

The ssh program on Linux allows you to specify a program or script from where it should get a passphrase when it needs one. This allows you to, for instance, hookup it up to your password manager to feed it the passphrase. You can do this by specifying the path to the program to execute

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Tech - January 30, 2020

Using FHIR with Google Cloud, BigQuery, and the AI Platform

From our XLSForm definitions in Ona Data to our JSON Forms in OpenSRP, the work we do at Ona is built upon community driven standards. As we further integrate HL7 FHIR (Fast Health Interoperability Resources) into OpenSRP, we’ve been exploring the existing tooling available. In this post we’ll dive into the Google Cloud Platform (GCP)

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Tech - January 25, 2020

Clojure & JavaScript Higher-order Functions

It was not easy for me to learn JavaScript. And when it came to learning higher-order functions, I had to take a break — literally get up and take a walk around the block — because I couldn’t seem to understand it. But through my pain, I’ve put together a short guide that hopefully makes it clearer

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Tech - December 19, 2019

Plotting Real-Time Locations with Mapbox

In this post we will leverage Mapbox’s real time live data plotting abilities to track the International Space Station (ISS) location on a map in real time. Real-time mapping and geolocation tracking is a core feature for web and mobile applications across many industries. In simpler words, this feature detects and streams location data to

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Tech - September 17, 2019

Terraform 101

Terraform is a product from Hashicorp. It is a tool for building, changing, and versioning infrastructure safely and efficiently. Written in Go, Terraform creates a plan for how it will build your infrastructure and then executes it. Recently, we held our first master class in Terraform, courtesy of our Director of Engineering and SRE team. It

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Tech - May 16, 2019

A Surprisingly Complex Task

by Rodgers My first week at Ona I was assigned a GitHub issue labeled high priority. The GitHub issue was created about 3 weeks before I joined. My task was to upgrade the HTTP library that was being used in the OpenSRP Android client. OpenSRP was using DefaultHttpClient and it was not working for Android version 5.0

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Tech - April 23, 2019

Dependency injection with Kotlin using the Koin library

by Elly Many experienced Java Developers are familiar with Dagger, some may have used libraries like Guice, Weld or the Context Dependency Injection (CDI) available in the Spring framework for managing dependencies in their apps. With the adoption of Kotlin you may be wondering which tool/library to use for dependency injection in your next app. Whereas you can use Dagger (for all

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Resources - April 17, 2019

How to Build a Slack Bot for Reporting Standups

by Pharis After joining Ona as a Software Engineering Intern, I was tasked to compile and post standups for all the members of the project we were working on. At first it was a great experience, and even better we could alternate shifts with another intern. However, as time went by the task was too

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Perspective - April 07, 2019

My Journey in Functional Programming at Ona

by Racheal Day one If someone told me last year I would be doing a different programming language in 2019, I would have shrugged it off. I had no prior experience with Functional Programming before I joined Ona. Yes! You heard me right, this was a completely new concept to me coming from an Object

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Tech - March 21, 2019

Riveting Introduction to Flake8

Recently, I was learning about tools that make me a better Python developer. Having previously had the mindset that having a strong enough skill-set would reduce your chances of having linting issues within your code, I was in shock to realize that other factors were in play too. At the time, I had just heard

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