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Date: Sat, 5 Jan 2008 13:31:57 -0800 (PST)
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Subject: Re: Creating a PrintWriter: No matching ctor found
From: Rich Hickey <richhic...@gmail.com>
To: Clojure <clojure@googlegroups.com>
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On Jan 5, 4:01 pm, "John Cowan" <johnwco...@gmail.com> wrote:
> On Jan 5, 2008 2:36 PM, Rich Hickey <richhic...@gmail.com> wrote:
>
> > - They will represent Boolean.TRUE and Boolean.FALSE, and will have
> > type Boolean
>
> > - only Booleans will implicitly convert to match boolean arguments in
> > calls to Java, as now
>
> > - Conditionals will test for nil/non-nil, as now
>
> > - boolean returns from Java will be converted into nil/:t, as now
>
> > - the boolean coercion operator will still be available to transform
> > Clojure logical values to Java logical values, as now
>
> Then I suggest "javatrue" and "javafalse", or any shortening or
> punctuating of that (jtrue, java-true, whatever) that suits you.
>
> I would also suggest a convenience function "javatruth" that maps
> nil/non-nil to javafalse and javatrue, so you can say things like
> (java-function (javatruth (another-java-function)))
> where java-function expects a Boolean and another-java-function returns one.

That's what the boolean coercion op does now. Note that this won't be
needed unless the calls are reflective.