Comments (2)
Thanks for bringing this up!
This is one of the limitations of smallbox
now. You can't have a sized SmallBox
with unsize
feature flag on. The only formal solution is using CoerceUnsize
, which can automatically coerce a sized StackBox
into unsized one, or just keep it sized if coercion is not required. There is a problem on SmallBox
that CoerceUnsize
can't be implement for an enum. I also have a solution for it: Turn SmallBox
into a struct and then track the tag information by ourselves. But it has a trade off that we have to define our own Box
type to control the heap pointer, which means we would not be able to get a standard Box<T>
out of it again.
I'd suggest exposing same basic interface for sized values via new and create a separate feature-controlled new_unsized for when it's needed, so that compiler can distinguish and correctly resolve types in both cases.
It definitely is a solution for the problem, I'll take it into consideration.
from smallbox.
CoerceUnsize
is implemented for SmallBox
and the new
method only requires T: Sized
now, so you can have either a sized SmallBox
or an unsized SmallBox
coerced from the sized one.
from smallbox.
Related Issues (13)
- Design: Implement to_box() method HOT 1
- Recommended addition to the readme. Explain why you would want to fallback to heap for large data HOT 1
- Can `new_copy` be explained better? HOT 4
- Custom space size such such as [u8; 64] always uses heap, no matter the size HOT 4
- SmallBox pin HOT 1
- Use `MaybeUninit` directly in the struct in place of `ManuallyDrop` HOT 1
- Is this project still alive? HOT 4
- Tests fails under miri HOT 15
- Problem with building for STM32 HOT 1
- Consider using macro for support of unsized values on stable Rust HOT 10
- Missing alignment checks HOT 1
- Tests fail when run with miri HOT 1
Recommend Projects
-
React
A declarative, efficient, and flexible JavaScript library for building user interfaces.
-
Vue.js
🖖 Vue.js is a progressive, incrementally-adoptable JavaScript framework for building UI on the web.
-
Typescript
TypeScript is a superset of JavaScript that compiles to clean JavaScript output.
-
TensorFlow
An Open Source Machine Learning Framework for Everyone
-
Django
The Web framework for perfectionists with deadlines.
-
Laravel
A PHP framework for web artisans
-
D3
Bring data to life with SVG, Canvas and HTML. 📊📈🎉
-
Recommend Topics
-
javascript
JavaScript (JS) is a lightweight interpreted programming language with first-class functions.
-
web
Some thing interesting about web. New door for the world.
-
server
A server is a program made to process requests and deliver data to clients.
-
Machine learning
Machine learning is a way of modeling and interpreting data that allows a piece of software to respond intelligently.
-
Visualization
Some thing interesting about visualization, use data art
-
Game
Some thing interesting about game, make everyone happy.
Recommend Org
-
Facebook
We are working to build community through open source technology. NB: members must have two-factor auth.
-
Microsoft
Open source projects and samples from Microsoft.
-
Google
Google ❤️ Open Source for everyone.
-
Alibaba
Alibaba Open Source for everyone
-
D3
Data-Driven Documents codes.
-
Tencent
China tencent open source team.
from smallbox.