From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from aibo.runbox.com (aibo.runbox.com [91.220.196.211]) by sourceware.org (Postfix) with ESMTPS id 0B9BB3893669 for ; Tue, 23 Jun 2020 00:02:38 +0000 (GMT) DMARC-Filter: OpenDMARC Filter v1.3.2 sourceware.org 0B9BB3893669 Authentication-Results: sourceware.org; dmarc=none (p=none dis=none) header.from=bothner.com Authentication-Results: sourceware.org; spf=pass smtp.mailfrom=per@bothner.com Received: from [10.9.9.72] (helo=submission01.runbox) by mailtransmit02.runbox with esmtp (Exim 4.86_2) (envelope-from ) id 1jnWOa-0004pr-Bc; Tue, 23 Jun 2020 02:02:36 +0200 Received: by submission01.runbox with esmtpsa [Authenticated alias (524175)] (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) id 1jnWOH-000179-D4; Tue, 23 Jun 2020 02:02:17 +0200 Subject: Re: Going from Scheme list to Java array To: Duncan Mak , kawa mailing list References: From: Per Bothner Message-ID: <60f49197-5651-bf5d-fa25-9c7472874875@bothner.com> Date: Mon, 22 Jun 2020 17:02:13 -0700 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.9.0 MIME-Version: 1.0 In-Reply-To: Content-Type: text/plain; charset=utf-8; format=flowed Content-Language: en-US Content-Transfer-Encoding: 7bit X-Spam-Status: No, score=-2.6 required=5.0 tests=BAYES_00, KAM_DMARC_STATUS, RCVD_IN_DNSWL_LOW, RCVD_IN_MSPIKE_H3, RCVD_IN_MSPIKE_WL, SPF_HELO_NONE, SPF_PASS, TXREP autolearn=ham autolearn_force=no version=3.4.2 X-Spam-Checker-Version: SpamAssassin 3.4.2 (2018-09-13) on server2.sourceware.org X-BeenThere: kawa@sourceware.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Kawa mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 23 Jun 2020 00:02:39 -0000 On 6/22/20 9:26 AM, Duncan Mak via Kawa wrote: > (define (into-array l ::java.util.List array-type) > (let* ((size (length l)) > (array ((primitive-array-new array-type) size))) > (l:toArray array))) > > (display (into-array (list 1 2 3) )) > > When I run this in Kawa 3.1.1, this is what I see: > > foo.scm:4:5: warning - more than one possibly applicable method 'toArray' > in java.util.List > candidate: Type java.lang.Object[] java.util.List.toArray(ClassType > java.util.function.IntFunction) > candidate: Type java.lang.Object[] > java.util.List.toArray(java.lang.Object[]) Not sure what is going on here. When I use Java 8, there is no problem. When I use Java 14, I get the same error. So it seems like something got added (after Java got default interface methods). However, I don't see it in the documentation here: https://docs.oracle.com/en/java/javase/14/docs/api/java.base/java/util/List.html -- --Per Bothner per@bothner.com http://per.bothner.com/