Today I Learned

A Hashrocket project

Ready to join Hashrocket? Find Openings here and apply today.

Get The Value Of An Environment Variable

You can get the value of an environment variable on your system using the System/getenv function. Just pass it the environment variable as a string:

> (System/getenv "HOME")

It returns nil when the environment variable doesn’t exist.

> (System/getenv "HOUSE")