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F4Functions.java
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27 lines (22 loc) · 750 Bytes
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package fj;
import fj.data.Validation;
/**
* Created by MarkPerry on 6/04/2014.
*/
public class F4Functions {
/**
* Promotes the TryCatch4 to a Validation that returns an Exception on the failure side and its result on the success side.
*
* @param t A TryCatch4 to promote
* @return A Validation with an Exception on the failure side and its result on the success side.
*/
static public <A, B, C, D, E> F4<A, B, C, D, Validation<Exception, E>> toF4(final TryCatch4<A, B, C, D, E> t) {
return (a, b, c, d) -> {
try {
return Validation.success(t.f(a, b, c, d));
} catch (Exception ex) {
return Validation.fail(ex);
}
};
}
}