Question 1

How do I get the currency for a country in Elixir using the countries library?

Accepted Answer

Use the filter_by function with the :alpha2 code, then access the currency field from the returned Country struct. For example, Countries.filter_by(:alpha2, 'DE') returns a struct with currency: 'EUR' as shown in the README.

Question 2

Countries Elixir library vs the Ruby gem countries: which should I use?

Accepted Answer

The Elixir library is a port of the Ruby gem, offering similar data but integrated for Elixir projects. Choose based on your stack; the Elixir version provides native compatibility but might lag in updates compared to the Ruby source.

Question 3

How to filter countries by continent in Elixir?

Accepted Answer

Call Countries.filter_by(:continent, 'Europe') to retrieve all countries in Europe, as demonstrated in the usage section where it returns 51 countries for Europe.

Question 4

Is the countries library kept up to date with ISO 3166 changes?

Accepted Answer

Updates depend on community contributions and the maintainer's schedule; check the GitHub repository for recent commits or consider forking for custom updates, as it's a static dataset.

Question 5

Can I add custom countries to the Elixir countries library?

Accepted Answer

Not directly through the API; you would need to fork the repository and edit the source data files, since the library is designed as a fixed dataset based on ISO 3166.

Question 6

How does the countries library handle performance with large datasets?

Accepted Answer

It loads all 250 countries into memory, so read operations are fast, but this can increase memory usage, which might be a concern for very large-scale or memory-sensitive applications.

Countries

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