From: Per Bothner <per@bothner.com>
To: kawa@sourceware.org
Subject: Re: Working with string keys in a java.util.Map
Date: Fri, 3 Jul 2020 15:33:01 -0700 [thread overview]
Message-ID: <68f1a45a-173d-aa66-298e-599c37cd93dc@bothner.com> (raw)
In-Reply-To: <31504.1593813177@localhost>
On 7/3/20 2:52 PM, Sudarshan S Chawathe wrote:
> I've had to get Java "String"s from Kawa strings often for similar
> reasons when using other JVM libraries, etc., and I have just used
> '(String "kawa string)'; it seems to work well, although it does
> introduce clutter.
I don't see how to avoid that in general. One could write a wrapper Map
that uses a coercion function to convert the key to required type,
similar to the coercion function in the make-parameter function.
Another way is to call the toString method, since Kawa strings
implement java.lang.CharSequence:
("kstring":toString)
This is cheap if the Kawa string is an IString, since uses a java.lang.String.
Alternative syntax:
(->java.lang.String "kstring")
or shorter:
(->String "kstring")
--
--Per Bothner
per@bothner.com http://per.bothner.com/
next prev parent reply other threads:[~2020-07-03 22:33 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-07-03 21:46 Duncan Mak
2020-07-03 21:52 ` Sudarshan S Chawathe
2020-07-03 22:33 ` Per Bothner [this message]
2020-07-04 1:30 ` Jamison Hope
2020-07-04 4:04 ` Duncan Mak
2020-07-04 4:29 ` Sudarshan S Chawathe
2020-07-04 5:24 ` Per Bothner
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