Yes, they both work - and the "#^chars" is much more legible.
Many thanks!
FYI, to whom it may concern...I think it's worth noting that this
simple
case gives confusing output from the repl.
user=> (new String #^chars (make-array Character/TYPE 3))
"user=>
And this:
user=> (def asdf (new String #^chars (make-array Character/TYPE
3)))
#'user/asdf
user=> asdf
"
That's the exact output except for the indentation. The dangling
string
w/ its single double-quote followed by the prompt. The prompt is not
even displayed w/ the second example.
As you can see from this example, non-empty strings are displayed
as expected.
user=> (def qwer (let [x (make-array Character/TYPE 3 )] (aset x 0
\a) (aset x 1 \b) (aset x 2 \c) (new String #^chars x)))
#'user/qwer
user=> qwer
"abc"
CHICKEE
On Oct 28, 10:31 pm, ataggart <alex.tagg...@gmail.com> wrote:
> Also you can substitute #^"[C" with the more legible #^chars.
>
> On Oct 28, 7:27 pm, Alex Osborne <a...@meshy.org> wrote:
>
> > Chick Corea wrote:
> > > What is wrong with this code? I want to instantiate a Java String
> > > from a Java character-array.
> > > But I want it to be fast, hence the need to cast per the "warn on
> > > reflection" message.
>
> > > user=> (set! *warn-on-reflection* true)
> > > true
> > > user=> (new String #^"[C" (make-array Character/TYPE 3 \a ))
> > > java.lang.ClassCastException: [[C cannot be cast to [C
> > > (NO_SOURCE_FILE:0)
>
> > Note the exception, "[[C" means a two-dimensional arary. (make-array
> > Character/TYPE 3 \a) actually means (make-array Character/TYPE 3 97) so
> > a 3 by 97 two-dimensional array (new char[3][97] in java syntax). What
> > you probably want is:
>
> > user> (String. #^"[C" (into-array Character/TYPE (repeat 3 \a)))
> > "aaa"
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