add method removeIf

primitiveCollections/src/main/java/org/lucares/collections/IntPredicate.java

@@ -0,0 +1,56 @@
+package org.lucares.collections;
+
+import java.util.function.Predicate;
+
+/**
+ * A {@link Predicate} for primitive integers.
+ */
+@FunctionalInterface
+public interface IntPredicate {
+
+	/**
+	 * Evaluates the predicate.
+	 *
+	 * @param i
+	 *            the input argument
+	 * @return {@code true} iff the input argument matches the predicate
+	 */
+	boolean test(int i);
+
+	/**
+	 * Returns a predicate that represents the logical AND of {@code this} and
+	 * another predicate. The and operation is short-circuiting.
+	 *
+	 * @param other
+	 *            the other predicate
+	 * @return the result of combining both predicates with a logical AND operation
+	 * @throws NullPointerException
+	 *             if {@code other} is null
+	 */
+	default IntPredicate and(final IntPredicate other) {
+		return (t) -> test(t) && other.test(t);
+	}
+
+	/**
+	 * Returns a predicate that represents the logical OR of {@code this} and
+	 * another predicate. The and operation is short-circuiting.
+	 *
+	 * @param other
+	 *            the other predicate
+	 * @return the result of combining both predicates with a logical OR operation
+	 * @throws NullPointerException
+	 *             if {@code other} is null
+	 */
+	default IntPredicate or(final IntPredicate other) {
+		return (t) -> test(t) || other.test(t);
+	}
+
+	/**
+	 * Returns a predicate that negates the result of this predicate.
+	 *
+	 * @return the negation of {@code this}
+	 */
+	default IntPredicate negate() {
+		return (t) -> !test(t);
+	}
+}