imbf commented on code in PR #1215:
URL: https://github.com/apache/commons-lang/pull/1215#discussion_r1615359136
##########
src/main/java/org/apache/commons/lang3/function/Functions.java:
##########
@@ -41,4 +41,20 @@ public static <T, R> Function<T, R> function(final
Function<T, R> function) {
private Functions() {
// no instances needed.
}
+
+ /**
+ * Applies the {@link Function} on the object if the object and the
function are not {@code null}. Otherwise, do
+ * nothing.
+ *
+ * @param object the object to apply the function.
+ * @param function the function to apply.
+ * @param <T> the type of the argument the function applies.
+ * @param <R> the type of the result the function returns.
+ * @return the value the function returns if the object and the function
are not {@code null}; {@code null}
+ * otherwise.
+ * @since 3.15.0
+ */
+ public static <T, R> R applyIfNotNull(final T object, final Function<T, R>
function) {
+ return object != null && function != null ? function.apply(object) :
null;
Review Comment:
That sounds great. null can also be a valid input.
Thank you.
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