class `Input`

Update scheduling policy for Op arguments.

index

Input.cold(value) – Create a cold Input.
Never marked dirty. Use this for input results that are only read when another Input is dirty.
parameters:
- value (Result or RTNode)
Input.hot(value) – Create a hot Input.
Behaviour depends on what kind of Result value is:
- Constant: treated like cold.
- SigStream: Marked dirty only if old and new result differ.
- EvtStream: Marked dirty only if the current result is dirty.
This is the most common Input strategy.
parameters:
- value (Result or RTNode)

Input(result) – create a new Input.
parameters:
- result (Result)
input:setup(prev) – copy state from old instance (optional).
called by Op:setup with another Input instance or nil once this instance is registered. Must prepare this instance for dirty.

May enter a ‘setup state’ that is exited using finish_setup.
parameters:
- prev (optional Input): previous Input intance or nil
input:dirty() – whether this input requires processing (optional).
must return a boolean indicating whether Ops that refer to this instance should be notified (via Op:tick). If not overwritten, delegates to result:dirty.
returns:
1. (bool): whether processing is necessary
input:finish_setup() – leave setup state (optional).
called after the Op has completed (or skipped) its first Op:tick after Op:setup. Must prepare this instance for dataflow operation.
input:unwrap() – unwrap to Lua value (optional).
returns:
1. (any): the raw Lua value
input:type() – return the type name of this Input (optional).
input:metatype() – return the metatype name of this Input (optional).
input.result – the current value
- result (Result)
input.mode() – the Input mode
input:__call() – alias for unwrap.