ao-railway

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Railway Oriented Programming in Java

ao-railway 최신버젼 다운로드

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// repository documentation

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# ao-railway

A library for Railway Oriented Programming with Java.

See Scott Wlaschin's talk on the subject for more information: [Scott Wlaschin - Railway Oriented Programming - error handling in functional languages](https://vimeo.com/97344498 "Scott Wlaschin - Railway Oriented Programming - error handling in functional languages").

# Example

Result.combine(
                    Result.with(username, "Username cannot be empty"),
                    Result.with(oldPassword, "Old password cannot be empty"),
                    Result.with(newPassword, "New password cannot be empty"))
                    .onSuccess(() -> userRepo.find(username))
                    .ensure(user -> user.isCorrectPassword(oldPassword), "Invalid password")
                    .onSuccess(user -> user.changePassword(newPassword))
                    .onSuccess(user -> userRepo.update(user))
                    .onFailure(() -> logger.error("Password could not be changed"))
                    .map(user -> user);

Or start with `com.example.Main` class.

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