- Mutable field invariance · Issue #5933 · microsoft/pyright🔍
- Need help with understanding invariance in mutable references.🔍
- Why can't a mutable interface/class inherit from an immutable one?🔍
- A mutable priority collection🔍
- Reasoning about invariants and sharing of mutable state 🔍
- The compiler complains about borrowing as mutable twice even ...🔍
- Interior References and Shared Mutability🔍
- What are the consequences of immutable classes with references to ...🔍
Mutable field invariance · Issue
Mutable field invariance · Issue #5933 · microsoft/pyright - GitHub
There are pragmatic reasons for this to be a rule that is on in basic. If this is always checked, then it becomes safe to narrow unions based on ...
Need help with understanding invariance in mutable references.
I was focusing too much on the mutable part and not considering that the type of v could be downgraded to match the expected type behind r .
java - In the absence of mutable types, is there a case for invariant ...
... mutability, although the problem only expresses itself with mutable structures - an immutable structure is an edge case. At first glance and ...
Reading 13: Abstraction Functions & Rep Invariants - MIT
Tweet 's immutability invariant has been broken. The problem is that Tweet leaked out a reference to a mutable object that its immutability depended on. We ...
Why can't a mutable interface/class inherit from an immutable one?
You are not merely adding new behavior. You are also changing existing behavior. For example, adding a new, mutable field, would have been ...
A mutable priority collection - ploeh blog
... problem, without breaking the invariant ... As so many other areas of knowledge, the wider field of software development suffers from the problem ...
Reasoning about invariants and sharing of mutable state (extended ...
The discipline presented in Section 3 deals with both of these problems. The last problem we address is the sharing of mutable ... field clocks used in invariant ...
The compiler complains about borrowing as mutable twice even ...
But I don't understand: the compiler can see that even though Trait2.field() borrows self as mutable, it was finished executing. As I understand ...
Interior References and Shared Mutability - Programming Linguistics
Invariant-conforming data fields are kept private and inject code ... problems with shared mutability turn out to not be a major issue.
What are the consequences of immutable classes with references to ...
In a sense the class is mutable because it references two mutable objects, but the mutability is completely encapsulated; the class fulfills the ...
Encapsulating mutable state - Ted Kaminski
We haven't actually restored compositional reasoning. Just because we made the mutable state into private fields doesn't mean we've accomplished ...
Why is the mutable reference not being dropped after the function call?
&mut X is invariant in X , so the 'a in &mut Cow<'a, String> cannot be "shrunk", and thus a &'a mut Cow<'a, String> borrows the Cow for however ...
Imagine never hearing the phrase 'aliasable, mutable' again
The problem is that @ pointers, due to their aliasable nature, actually become more complex to use when combined with the borrow checker (at ...
Reasoning about invariants and sharing of mutable state
The last problem we address is the sharing of mutable state. Rule (2) ... Connect increments a field clocks used in invariant clocks = size(deps). In ...
admissible invariant provided that for every field reference. E.f , f is neither ... results, mutable local variables and object fields, and dy- namic ...
Universe-Type-Based Verification Techniques for Mutable Static ...
In fact, any instance invariant mentioning static fields can always be expressed as a static invariant by adding a quantified object to replace all the mentions ...
Typing Mutable References - Software Foundations
... mutable variables (reference cells, arrays, mutable record fields, etc.); ... invariance that we used in the proof of the substitution lemma for the STLC.
Julep: setfield! for mutable references to immutables · Issue #17115 ...
modify fields inside of immutable objects that are wrapped in mutable objects. As will be shown later, this wouldn't alter existing semantics. This proposal ...
reasoning about invariants and sharing of mutable state - CiteSeerX
Problems: due to re-entrant callbacks, precondition P ¡. I for£. ¥. ¦. § is ... Auxiliary field to make explicit when invariant holds: ¢. ¡ boolean бг ¢ бв.
To var or let struct properties? - Using Swift
imagine 20 fields like this. and some invariant that must be withheld across all them. you'll end up with a bunch of throwing mutating function ...