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| Description | |||||||||
| Miscellaneous information about the system environment. | |||||||||
| Synopsis | |||||||||
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| Documentation | |||||||||
| getArgs :: IO [String] | |||||||||
| Computation getArgs returns a list of the program's command line arguments (not including the program name). | |||||||||
| getProgName :: IO String | |||||||||
Computation getProgName returns the name of the program as it was invoked. However, this is hard-to-impossible to implement on some non-Unix OSes, so instead, for maximum portability, we just return the leafname of the program as invoked. Even then there are some differences between platforms: on Windows, for example, a program invoked as foo is probably really FOO.EXE, and that is what getProgName will return. | |||||||||
| getEnv :: String -> IO String | |||||||||
Computation getEnv var returns the value of the environment variable var. This computation may fail with:
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| withArgs :: [String] -> IO a -> IO a | |||||||||
| withArgs args act - while executing action act, have getArgs return args. | |||||||||
| withProgName :: String -> IO a -> IO a | |||||||||
| withProgName name act - while executing action act, have getProgName return name. | |||||||||
| Produced by Haddock version 0.6 |