How to get environment variables in the form of an array in Ruby
Overview
The to_a method can be used to return the environment variable class, ENV, to an array. It returns an array containing the name/value pairs of each environment variable.
Syntax
ENV.to_a
Syntax for slice() method of ENV
Parameter
None.
Return value
An array that contains objects of two attributes is returned, with a name/value pair for each.
Code example
# clear all environment variablesENV.clear# create some environment variablesENV["secret_name"] = "secret"ENV["secret_token"] = "secret"ENV["private_key"] = "code_sync_456"ENV["foo"] = "123"ENV["bar"] = "123"# reprint length of environment variablesputs "#{ENV.to_a}"
Explanation
- Line 2: We cleared default environment variables.
- Line 5–9: We create new environment variables.
- Line 12: We use the
to_amethod, we were able to get the array containing 2-element arrays of name/value pair of each environment variable. And then we printed our result.
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