public static IntToLongFunction intToLongFunction(CheckedIntToLongFunction function) {
        return intToLongFunction(function, THROWABLE_TO_RUNTIME_EXCEPTION);
    }
Wrap a {@link CheckedIntToLongFunction} in a {@link IntToLongFunction}.
<p>
Example:
<pre><code>
IntStream.of(1, 2, 3).mapToLong(Unchecked.intToLongFunction(i -> {
    if (i &lt; 0)
        throw new Exception("Only positive numbers allowed");

    return (long) i;
});
</code></pre>
jOOL/src/main/java/org/jooq/lambda/Unchecked.java