Module reactive

Reactive primitives for Sycamore.

Re-export of the [sycamore_reactive] crate.

Macros

• impl_into_maybe_dyn
  A macro that makes it easy to write implementations for Into<MaybeDyn<T>>.
• impl_into_maybe_dyn_with_convert
  Create From<U> implementations for MaybeDyn<T> for a list of types.

Structs

• NodeHandle
  A handle to a reactive node (signal, memo, effect) that lets you run further tasks in it or manually dispose it.
• ReadSignal
  A read-only reactive value.
• RootHandle
  A handle to a root. This lets you reinitialize or dispose the root for resource cleanup.
• Signal
  A reactive value that can be read and written to.

Enums

• MaybeDyn
  Represents a value that can be either static or dynamic.

Traits

• Trackable
  A trait that is implemented for reactive data that can be tracked, such as Signal.

Functions

• batch
  Batch updates from related signals together and only run memos and effects at the end of the scope.
• create_child_scope
  Create a child scope.
• create_effect
  Creates an effect on signals used inside the effect closure.
• create_effect_initial
  Creates an effect that runs a different code path on the first run.
• create_memo
  Creates a memoized computation from some signals.
• create_reducer
  An alternative to create_signal that uses a reducer to get the next value.
• create_root
  Creates a new reactive root with a top-level reactive node. The returned RootHandle can be used to dispose the root.
• create_selector
  Creates a memoized value from some signals.
• create_selector_with
  Creates a memoized value from some signals. Unlike create_memo, this function will not notify dependents of a change if the output is the same.
• create_signal
  Create a new Signal.
• map_indexed
  Function that maps a Vec to another Vec via a map function.
• map_keyed
  Function that maps a Vec to another Vec via a map function and a key.
• on
  A helper function for making dependencies explicit.
• on_cleanup
  Adds a callback that is called when the scope is destroyed.
• provide_context
  Provide a context value in this scope.
• provide_context_in_new_scope
  Provide a context value in a new scope.
• try_use_context
  Tries to get a context value of the given type. If no context is found, returns None.
• untrack
  Run the passed closure inside an untracked dependency scope.
• use_context
  Get a context with the given type. If no context is found, this panics.
• use_context_or_else
  Try to get a context with the given type. If no context is found, returns the value of the function and sets the value of the context in the current scope.
• use_current_scope
  Get a handle to the current reactive scope.
• use_global_scope
  Get a handle to the root reactive scope.
• use_scope_depth
  Gets how deep the current scope is from the root/global scope. The value for the global scope itself is always 0.