Download Project Elixir

You should choose something that you have fun doing, best thing would be that you can use it.

The project does not have to be too simple, you do not build the foundation of an empire, code that last for decades. So just make errors and stupid things.

To create an umbrella project we start a project as if we were going to start a normal Mix project but pass in the --umbrella flag.For this example, we are going to make the shell of a machine learning toolkit.Why a machine learning toolkit? Why not? It is made up of various learning algorithms and utility functions.

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As an Elixir developer, you will most likely use one of the many existing frameworks when writing your Elixir code. Phoenix covers web applications, Ecto communicates with databases, you can craft embedded software with Nerves, Nx powers machine learning and AI projects, Membrane assembles audio/video processing pipelines, Broadway handles data ingestion and processing, and many more. These frameworks handle the lower level details of concurrency, distribution, and fault-tolerance, so you, as a user, can focus on your own needs and demands.

Let's create our first project by invoking mix new from the command line. We'll pass the project path as the argument (kv, in this case). By default, the application name and module name will be retrieved from the path. So we tell Mix that our main module should be the all-uppercase KV, instead of the default, which would have been Kv:

There is also a private function named deps, which is invoked from the project function, that defines our project dependencies. Defining deps as a separate function is not required, but it helps keep the project configuration tidy.

We are going to work on this kv project, making modifications and trying out the latest changes from a iex session. While you may start a new session whenever there are changes to the project source code, you can also recompile the project from within iex with the recompile helper, like this:

Mix also generated the appropriate structure for running our project tests. Mix projects usually follow the convention of having a _test.exs file in the test directory for each file in the lib directory. For this reason, we can already find a test/kv_test.exs corresponding to our lib/kv.ex file. It doesn't do much at this point:

There is much more to Mix, and we will continue to explore it as we build our project. A general overview is available on the Mix documentation and you can always invoke the help task to list all available tasks:

As an Elixir consulting company, Serokell has substantial experience working with its libraries. In this article, I have compiled 17 neat frameworks, projects, and libraries to introduce you to the wonders of open-source Elixir.

Overall, the open-source ecosystem of Elixir is quite large, with several high-quality projects that are used by many companies in production. To see more examples of Elixir software and find inspiration for your own Elixir project ideas, you can check out this curated list of Elixir libraries.

To explain how umbrella projects work, it is useful to take a step back and review the concept of applications in Elixir (and of course, in Erlang). If you need a refresher on Elixir, you may want to read my last blog.

With umbrella projects, Elixir allows you to have more than one application in your system. Each additional application has to conform to the concept of an application already explained. Applications inside an umbrella can have siblings as dependencies as well.

The really nice thing about this is that there is almost no difference between an application inside an umbrella and the same application if it were built as a single project. Also, this similarity applies to external dependencies as well. In reality, all of this follows the same concept of an OTP application.

One of the positive points in an umbrella project is that it helps you think about your system with clear separation of logic and responsibilities, which translates to the organization of your code. This brings to the table clear cognitive benefits for team members who are joining the project, and for future maintenance.

Because applications inside an umbrella are stand-alone components, and based on how Elixir projects are released, it is possible to have different strategies for deployment. In practice, it is common for umbrella projects to be deployed as a single release. However, Elixir offers the option of having releases per application or a group of applications.

Another point to highlight is the fact that common external libraries must be added as dependencies and set up in all applications if you want to have them available internally. Common libraries are usually for testing and development, such as Credo, Dialyxir, ExDoc, and ExCoveralls. In other Elixir projects, all applications live in the main mix.exs file.

Here at CityBase, we use umbrella projects instead of standalone applications to take advantage of the umbrella design, and the way it allows a developer to think about a project. Having to think about new functionality and how to better allocate its codebase is a great way of adding maintainable code over time. It also presents an opportunity to extract code quickly to external libraries and provide a way to build specific interfaces around your core components.

The directory names can be verbose if a top-level project name is prepended to projects. I have considered shortening them before, but after all I go with long names because it is nice to be obvious about what exactly the directories are for.

If we're using a poncho project structure, we'll need to keep in mind that

the my_app_ui configuration won't be applied automatically, so we should

either import it from there or duplicate the required configuration.

At first, the poncho project looked scary, but it is actually pretty simple. The Nerves firmware combined with the Phoenix UI seems so powerful that I may consider using this pattern for my other Nerves projects.

We need the --sup flag so that the project has a supervisor. This is for Ecto. Next, open up your project in your favorite editor, open the mix.exs file and then add Ecto and Postgrex (a Postgres library) to your project's deps:

Mix projects no longer generate configuration files by default, but we need some configuration in order to connect to a database. Create a config directory at the top level of your project and then a config.exs file in it to hold your default configuration and a dev.exs to hold the dev environment-specific configuration.

The project EU-ToxRisk: "an integrated european 'flagship' program driving mechanism-based toxicity testing and risk assessment for the 21st century" is a H2020 supported collaborative project for the period 2016-2021 in which academia joins forces with small and medium-sized enterprises (SMEs), large industry, contract research organisations (CROs) and regulatory bodies to achieve a paradigm shift in toxicology towards a more efficient and animal-free chemical safety assessment.

The project iPIE: "Intelligence Led Assessment of Pharmaceuticals in the Environment", aims to develop a predictive framework that utilise existing information and in silico models to support more intelligent environmental testing of pharmaceuticals in development and to prioritise legacy pharmaceuticals for full environmental risk assessment and/or environmental (bio) monitoring. European project funded by IMI for the period 2015-2019.

The project MedBioinformatics "Creating medically-driven integrative bioinformatics applications focused on oncology, CNS disorders and their comorbidities" aims to develop useful bioinformatics tools and applications, and autonomously usable for analysing the huge amount of data and knowledge generated in healthcare and biomedical research in order to facilitate translational research and precision medicine. European project funded by H2020 for the period 2015-2018 and coordinated by the GRIB.

Integrating bioinformatics and chemoinformatics approaches for the development of expert systems allowing the in silico prediction of toxicities. European project funded by IMI, extended until 2016 and coordinated by the GRIB. The eTOX project aims to develop a drug safety database from the pharmaceutical industry legacy toxicology reports and public toxicology data, innovative in silico strategies and novel software tools to better predict the toxicological profiles of small molecules in early stages of the drug development pipeline.

The Open Pharmacological Concepts Triple Store project (Open PHACTS) will develop an open access innovation platform, called Open Pharmacological Space (OPS), via a semantic web approach. OPS will be comprised of data, vocabularies and infrastructure needed to accelerate drug- oriented research. The aim is to develop an enabling resource for drug discovery projects which is open to all users and freely available in the public domain. This european project is funded by IMI and has been recently extended until 2016. ff782bc1db