Latch.java

package com.team254.lib.util;

/**
 * Latches a boolean.
 *
 * @author richard@team254.com (Richard Lin)
 */
public class Latch {
    private boolean lastVal;

    public boolean update(boolean newVal) {
        boolean result = newVal && !lastVal;
        lastVal = newVal;
        return result;
    }
}