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[Merged by Bors] - Add more FromWorld implementations #3945

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[Merged by Bors] - Add more FromWorld implementations #3945

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TheRawMeatball
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Objective

Make FromWorld more useful for abstractions with a form similar to

trait FancyAbstraction {
  type PreInitializedData: FromWorld;
}

Solution

Add a FromWorld implementation for SystemState as well as a way to group together multiple FromWorld implementing types as one.

Note: I plan to follow up this PR with another to add Local support to exclusive systems, which should get a fair amount of use from the FromWorld implementation on SystemState.

@github-actions github-actions bot added the S-Needs-Triage This issue needs to be labelled label Feb 14, 2022
@TheRawMeatball TheRawMeatball added A-ECS Entities, components, systems, and events C-Feature A new feature, making something new possible and removed S-Needs-Triage This issue needs to be labelled labels Feb 14, 2022
alice-i-cecile
alice-i-cecile reviewed Feb 14, 2022
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Very interesting. This PR's code quality and docs are fine. The future work sounds promising and this LGTM, but I wouldn't merge until we have something useful built on top of this (just fork off of this PR IMO).

@TheRawMeatball TheRawMeatball mentioned this pull request Feb 14, 2022
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cart
cart reviewed Apr 1, 2022
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This is a win! Love the idea. Maybe we should do the same for QueryState?

crates/bevy_ecs/src/world/mod.rs Outdated Show resolved Hide resolved
@alice-i-cecile
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This is a win! Love the idea. Maybe we should do the same for QueryState?

I like this, I think.

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cart commented Apr 5, 2022

bors r+

bors bot pushed a commit that referenced this pull request Apr 5, 2022
@TheRawMeatball
Add more FromWorld implementations (#3945)
73edb11 
# Objective

Make `FromWorld` more useful for abstractions with a form similar to
```rs
trait FancyAbstraction {
  type PreInitializedData: FromWorld;
}
```

## Solution

Add a `FromWorld` implementation for `SystemState` as well as a way to group together multiple `FromWorld` implementing types as one.

Note: I plan to follow up this PR with another to add `Local` support to exclusive systems, which should get a fair amount of use from the `FromWorld` implementation on `SystemState`.
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bors bot commented Apr 5, 2022

Pull request successfully merged into main.

Build succeeded:

@bors bors bot changed the title Add more FromWorld implementations [Merged by Bors] - Add more FromWorld implementations Apr 5, 2022
@bors bors bot closed this Apr 5, 2022
aevyrie pushed a commit to aevyrie/bevy that referenced this pull request Jun 7, 2022
@TheRawMeatball @aevyrie
Add more FromWorld implementations (bevyengine#3945)
c95048a 
# Objective

Make `FromWorld` more useful for abstractions with a form similar to
```rs
trait FancyAbstraction {
  type PreInitializedData: FromWorld;
}
```

## Solution

Add a `FromWorld` implementation for `SystemState` as well as a way to group together multiple `FromWorld` implementing types as one.

Note: I plan to follow up this PR with another to add `Local` support to exclusive systems, which should get a fair amount of use from the `FromWorld` implementation on `SystemState`.
ItsDoot pushed a commit to ItsDoot/bevy that referenced this pull request Feb 1, 2023
@TheRawMeatball @ItsDoot
Add more FromWorld implementations (bevyengine#3945)
3f61453 
# Objective

Make `FromWorld` more useful for abstractions with a form similar to
```rs
trait FancyAbstraction {
  type PreInitializedData: FromWorld;
}
```

## Solution

Add a `FromWorld` implementation for `SystemState` as well as a way to group together multiple `FromWorld` implementing types as one.

Note: I plan to follow up this PR with another to add `Local` support to exclusive systems, which should get a fair amount of use from the `FromWorld` implementation on `SystemState`.
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@alice-i-cecile alice-i-cecile alice-i-cecile approved these changes

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