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rustlang's profile
Rust Language
Rust Language
Rust Language
@rustlang

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Rust Language

@rustlang

A programming language empowering everyone to build reliable and efficient software.

rust-lang.org
Joined July 2010

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    1. Michael Marcin‏ @EscJaeger 13 Feb 2019
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      However, this compiles fine.pic.twitter.com/0EcT5tQj5i

      1 reply 0 retweets 1 like
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    2. Michael Marcin‏ @EscJaeger 13 Feb 2019
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      And it's also okay with this.pic.twitter.com/h24N8GFfUB

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    3. Michael Marcin‏ @EscJaeger 13 Feb 2019
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      Allowed to have N immutable references or at most 1 mutable reference with 0 immutable references to an object. I'm sure this has huge implications. I wonder, for example, how you build a mutable doubly-linked list. More to read. #rustlang

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    4. Michael Marcin‏ @EscJaeger 13 Feb 2019
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      And finally substring / slice / string_view with a nice bit syntactic sugar. Half-open ranges are a good choice. #rustlang

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    5. Michael Marcin‏ @EscJaeger 15 Feb 2019
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      Ch 5 Structs. Some fairly unique shorthand for initialization with the field init shorthand syntax and .. struct update syntax. Struct tuples as strong typedefs for tuples looks nice. Looks like I have to wait til Ch 10 to see how to have a reference member. #rustlang

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    6. Michael Marcin‏ @EscJaeger 15 Feb 2019
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      "Methods can take ownership of self" feels weird but I'll try to keep an open mind. #rustlang

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    7. Michael Marcin‏ @EscJaeger 15 Feb 2019
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      The chapter never explained any rationale for why methods and associated functions (in C++ static member functions) are in a separate impl block apart from the struct definition. It's a mystery. #rustlang

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    8. Michael Marcin‏ @EscJaeger 15 Feb 2019
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      Also expected to see something about access control ala C++ public/private but no mention of anything like that yet. #rustlang

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    9. Michael Marcin‏ @EscJaeger 15 Feb 2019
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      Ch 6 Enums in rust look awesome. You can model C-like enums but more interestingly they are sum types that can carry data too. Like a C++ variant but as a language level feature that looks very clean to work with. #rustlang

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    10. Michael Marcin‏ @EscJaeger 15 Feb 2019
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      It's not clear from this chapter (or I missed it) how enums are actually represented. I suspect they are the size of the largest variant like a C union + extra for the discriminator and that their memory is directly on the stack for a local variable. #rustlang

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      Rust Language‏ @rustlang 17 Feb 2019
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      Replying to @EscJaeger

      The book doesn’t talk a lot about representation because, without a special attribute, Rust reserves the right to change representations

      11:31 AM - 17 Feb 2019
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