environment object in swift

In Swift, the ProcessInfo class provides access to the process’s environment variables through the environment property. The environment property is a dictionary with String keys and values. To access a specific variable, you can subscript the dictionary with the variable’s name.

Here's an example:

main.swift
let environment = ProcessInfo.processInfo.environment
let home = environment["HOME"]
print(home)
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This code retrieves the value of the HOME environment variable and prints it to the console.

It's worth noting that the environment dictionary is populated once when the app starts up, so changes to environment variables made after the app has launched won't be reflected in this dictionary.