From mboxrd@z Thu Jan 1 00:00:00 1970 X-Spam-Checker-Version: SpamAssassin 4.0.1 (2024-03-25) on ip-172-31-91-241.ec2.internal X-Spam-Level: X-Spam-Status: No, score=0.0 required=3.0 tests=none autolearn=ham autolearn_force=no version=4.0.1 Path: nntp.eternal-september.org!eternal-september.org!feeder.eternal-september.org!.POSTED!not-for-mail From: "Dmitry A. Kazakov" Newsgroups: comp.lang.ada Subject: Re: In precision typing we trust Date: Tue, 26 Aug 2025 21:36:29 +0200 Organization: A noiseless patient Spider Message-ID: <108l2bt$81g3$1@dont-email.me> References: <107uv9g$3019a$1@dont-email.me> <107v1ji$303of$1@dont-email.me> <336fbb5f-a279-ea8e-67fd-f62bb00d6a89@irrt.De> <107vfb9$34cpj$1@dont-email.me> <10855lq$gj8l$1@dont-email.me> <1088h1a$19635$1@dont-email.me> <1089p1i$1ig1d$1@dont-email.me> <108aq2p$1qo9o$1@dont-email.me> <108dh2l$2f5h3$1@dont-email.me> <108ej11$2mbr8$1@dont-email.me> <108g1fv$32gqg$3@dont-email.me> <108h6b7$3a75k$3@dont-email.me> <108ijfj$3lihe$4@dont-email.me> <108jqcg$3ti12$2@dont-email.me> <87cy8im3kc.fsf@nightsong.com> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit Injection-Date: Tue, 26 Aug 2025 19:36:29 +0000 (UTC) Injection-Info: dont-email.me; posting-host="a566786fa3882b9931648d94db222c97"; logging-data="263683"; mail-complaints-to="abuse@eternal-september.org"; posting-account="U2FsdGVkX19jG0BZCA3I8t8SB0ob1LsjhuXEfEjWwMg=" User-Agent: Mozilla Thunderbird Cancel-Lock: sha1:/Et9KjsG9nbvZnWhfp7Vgrxthuw= In-Reply-To: <87cy8im3kc.fsf@nightsong.com> Content-Language: en-US Xref: feeder.eternal-september.org comp.lang.ada:66930 List-Id: On 2025-08-26 18:48, Paul Rubin wrote: > "Dmitry A. Kazakov" writes: >> Yep, as you can pass everything to anything: >> >> def F(X): >> X = X + 1 >> F(F) > >> Very, very strong typing! > > ==> TypeError: unsupported operand type(s) for +: 'function' and 'int' > > The typechecking is done at runtime, just like it says on the tin. The error occurred inside the body of F. F itself was successfully called, because it is untyped. Just as I said. -- Regards, Dmitry A. Kazakov http://www.dmitry-kazakov.de