| ZVON > References > Haskell reference |
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| Module: | System |
|---|---|
| Function: | getEnv |
| Type: | String -> IO String |
| Description: | Computation getEnv var returns the value of the environment variable var. If variable var is undefined, the isDoesNotExistError exception is raised. |
| Related: |
Input: getEnv "HOME"
Output: "/home/nicmila"
Input: getEnv "XXX"
Output: File or variable not found: XXX