Returns key set
Returns key set
Observes key and encapsulate its value states in a partial channel
Observes key and encapsulate its value states in a partial channel
value$
Row exists where f returns true
Only include elements for which f is true
For all rows f returns true
Value associated to key
Returns true if key is defined
Returns key set
Convert dictionary to buffer
Converts dictionary to map *
Value associated to key
Returns all values