On Feb 9, 9:26 am, [email protected] (Dominic Mitchell) wrote:
> Hear, hear!  Although, I'd call it "of" rather than create, as that's
> what the google collections library does.  The type inference leads to a
> really nice API.

Thanks, Dominic. I used your message as an incentive to replace our
Pair constructor with an "of" factory method. And yes, it does a great
job of cleaning things up! I hit one snag. Is there a way around the
following compilation problem?

public class PairTest {
    /*
     * The Pair.of() call below yields the following compilation
error: Type
     * mismatch: cannot convert from Pair<Class<capture#1-of ? extends
     * Exception>,Class<capture#2-of ? extends Exception>> to
Pair<Class<?
     * extends Exception>,Class<? extends Exception>>
     */
    public static void main(String[] args) {
        Class<? extends Exception> foo;
        Class<? extends Exception> bar;

        // Original line with constructor.
        Pair<Class<? extends Exception>, Class<? extends Exception>>
compiles = new Pair<Class<? extends Exception>, Class<? extends
Exception>>(
            foo, bar);

        // Failed attempt at using of.
        Pair<Class<? extends Exception>, Class<? extends Exception>>
doesntCompile = Pair.of(
            foo, bar);
    }
}

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