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package org.davidmoten.kool.function;

import org.davidmoten.kool.internal.util.Exceptions;
import org.davidmoten.kool.internal.util.StreamUtils;

@FunctionalInterface
public interface Function {

    R apply(T t) throws Exception;

    default R applyUnchecked(T t) {
        try {
            return apply(t);
        } catch (Exception e) {
            return Exceptions.rethrow(e);
        }
    }

    @SuppressWarnings("unchecked")
    static  Function identity() {
        return (Function) StreamUtils.FunctionIdentityHolder.IDENTITY;
    }

}