Struct specs::Write

source · []
pub struct Write<'a, T, F = DefaultProvider> where
    T: 'a, 
{ /* private fields */ }
Expand description

Allows to fetch a resource in a system mutably.

If the resource isn’t strictly required, you should use Option<Write<T>>.

Type parameters

  • T: The type of the resource
  • F: The setup handler (default: DefaultProvider)

Trait Implementations

The resulting type after dereferencing.

Dereferences the value.

Mutably dereferences the value.

Converts to this type from the input type.

Type of joined components.

Type of joined storages.

Type of joined bit mask.

Open this join by returning the mask and the storages. Read more

Get a joined component value by a given index. Read more

If this Join typically returns all indices in the mask, then iterating over only it or combined with other joins that are also dangerous will cause the JoinIter/ParJoin to go through all indices which is usually not what is wanted and will kill performance. Read more

Create a joined iterator over the contents.

Returns a Join-able structure that yields all indices, returning None for all missing elements and Some(T) for found elements. Read more

Create a joined parallel iterator over the contents.

Sets up the system data for fetching it from the World.

Fetches the system data from World. Note that this is only specified for one concrete lifetime 'a, you need to implement the SystemData trait for every possible lifetime. Read more

Returns all read dependencies as fetched from Self::fetch. Read more

Returns all write dependencies as fetched from Self::fetch. Read more

Auto Trait Implementations

Blanket Implementations

Gets the TypeId of self. Read more

Immutably borrows from an owned value. Read more

Mutably borrows from an owned value. Read more

The accessor of the SystemData, which specifies the read and write dependencies and does the fetching. Read more

Sets up World for fetching this system data.

Creates a new resource bundle by fetching the required resources from the World struct. Read more

Returns the argument unchanged.

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

The alignment of pointer.

The type for initializers.

Initializes a with the given initializer. Read more

Dereferences the given pointer. Read more

Mutably dereferences the given pointer. Read more

Drops the object pointed to by the given pointer. Read more

The type returned in the event of a conversion error.

Performs the conversion.

The type returned in the event of a conversion error.

Performs the conversion.