Hi, I think it would be great to have a result type in the Qt API and use that, instead of C++ exceptions. In theory we could use std::variant, but I think the API inconvenient for the use-case of a result. That wouldn't prevent us from using it in the implementation though.
Simon ________________________________ From: Development <[email protected]> on behalf of Thiago Macieira <[email protected]> Sent: Thursday, March 5, 2020 16:31 To: [email protected] <[email protected]> Subject: Re: [Development] Make Qt6 JNI API safer to use On Thursday, 5 March 2020 07:29:07 PST Bogdan Vatra via Development wrote: > În ziua de joi, 5 martie 2020, la 17:21:11 EET, Thiago Macieira a scris: > > On Thursday, 5 March 2020 07:14:44 PST Vitaly Fanaskov wrote: > > > I think something like std::expected is a nice thing to have. > > > > > > There is some experimental implementation of std::expected: > > > https://github.com/TartanLlama/expected. > > > > > > Another good example is Result > > > (https://doc.rust-lang.org/std/result/index.html) type from Rust. But > > > might look clumsy in C++, because there is neither pattern matching nor > > > operator? > > > (https://doc.rust-lang.org/std/result/index.html#the-question-mark-opera > > > to > > > r-> ) to handle this case gracefully. > > > > We have QSystemResult in QtCore already. This predates both std::expected > > and Result from Rust. > > > > One of my abandoned commits (see the I/O thread) was an update to it to > > make it better. > > Where is QSystemResult? I can't find it in dev branch ... Did you rename it? Ah, sorry, we only have QSystemError. QSystemResult is the class I added and abandoned in Idaa189413f404cffb1eafffd14cef83d45089eee. -- Thiago Macieira - thiago.macieira (AT) intel.com Software Architect - Intel System Software Products _______________________________________________ Development mailing list [email protected] https://lists.qt-project.org/listinfo/development
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