NotifiedSecurityChanges

QuantConnect.Algorithm.Framework.NotifiedSecurityChanges

Bases: Object

Provides convenience methods for updating collections in responses to securities changed events

update(
    changes: SecurityChanges,
    add: Callable[[Security], Any],
    remove: Callable[[Security], Any],
) -> None

Invokes the provided add and remove functions for each

Parameters:

Name	Type	Description	Default
`changes`	`SecurityChanges`	The security changes to process	required
`add`	`Callable[[Security], Any]`	Function called for each added security	required
`remove`	`Callable[[Security], Any]`	Function called for each removed security	required

update_collection(
    securities: ICollection[Security],
    changes: SecurityChanges,
) -> None

Adds and removes the security changes to/from the collection

Parameters:

Name	Type	Description	Default
`securities`	`ICollection[Security]`	The securities collection to be updated with the changes	required
`changes`	`SecurityChanges`	The changes to be applied to the securities collection	required