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algo_luca's profile
Luca Palmieri 🦊
Luca Palmieri 🦊
Luca Palmieri  🦊
@algo_luca

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Luca Palmieri  🦊

@algo_luca

Software is complicated, people are complicated. The mix? 💥 Writing about stuff to learn how it works, mostly in Rust. Lead Engineer at @TrueLayer. He/him.

City of London, London
lpalmieri.com
Joined July 2017

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    Luca Palmieri  🦊‏ @algo_luca 24 Jun 2019
    • Report Tweet
    • Report NetzDG Violation

    What is the best way to test "compiler-heavy" code in @rustlang? Making sure that certain constructs (e.g. procedural macro applied to a struct) compile or that certain combinations DO NOT compile. The only thing I have found so far is compiletest_rs, should I start from there?

    12:31 PM - 24 Jun 2019
    • 4 Retweets
    • 18 Likes
    • skim David Gu Harry 🦀 shady khalifa Rust Language Aʟᴇx Lᴏʜʀ Gibson Fahnestock ʟʟoɢiq Mr. Kumar
    5 replies 4 retweets 18 likes
      1. New conversation
      2. ʟʟoɢiq‏ @llogiq 24 Jun 2019
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        Replying to @algo_luca @rustlang

        That's what I use, too.

        1 reply 0 retweets 2 likes
      3. Luca Palmieri  🦊‏ @algo_luca 24 Jun 2019
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        Replying to @llogiq @rustlang

        Very speculative, but worth a shot: is there any way to "intervene" on compiler errors to return something more relevant to the user? Seeing the current state of typenum I imagine that the answer is no unfortunately :/

        2 replies 0 retweets 1 like
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      2. Florian Walch‏ @florianwalch 24 Jun 2019
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        Replying to @algo_luca @rustlang

        trybuild might be helpful:https://github.com/dtolnay/trybuild …

        1 reply 0 retweets 5 likes
      3. Luca Palmieri  🦊‏ @algo_luca 24 Jun 2019
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        Replying to @florianwalch @rustlang

        Wow, that looks useful!

        0 replies 0 retweets 0 likes
      4. End of conversation
      1. Peter Hrvola‏ @hrvolapeter 24 Jun 2019
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        Replying to @algo_luca @rustlang

        compiletest_rs worked very well for me, but my API was very similar to compilerhttps://github.com/retep007/javascript-es9-parser/tree/master/components/evaluator …

        0 replies 0 retweets 2 likes
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      1. New conversation
      2. Josh Stone‏ @cuviper 24 Jun 2019
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        Replying to @algo_luca @rustlang

        You can write compile_fail doc tests, but I think the error string matching only works on nightly. e.g. in rayon:https://github.com/rayon-rs/rayon/tree/master/rayon-core/src/compile_fail …

        1 reply 0 retweets 0 likes
      3. David Pedersen‏ @DavidPdrsn 24 Jun 2019
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        Replying to @cuviper @algo_luca @rustlang

        It works on stable just fine. I have several stable crates that use it.

        0 replies 0 retweets 0 likes
      4. End of conversation
      1. commandline_be‏ @commandline_be 25 Jun 2019
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        Replying to @algo_luca @rustlang

        As a Dev n00b I wonder what could require such test ? Rustc is quite developed imho

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