Dirs returns a predictor that predict directory paths.

Dirs returns a predictor that predict file or directory paths.

OptCheck enforces the valid values on the predicted flag.

Options return a config from a list of options.

OptPredictor allows to set a custom predictor.

OptValues allows to set a desired set of valid values for the flag.

Or unions prediction functions, so that the result predication is the union of their predications.

Nothing is used to indicate that does not completes anything.

Something is used to indicate that does not completes somthing.

Config stores prediction options.

FilesSet predict according to file rules to a given fixed set of file names.

Option provides prediction through options pattern.

Set predicts a set of predefined values.