Implement new merging and repeating transforms #703
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This make connect_to and O(N) operation with respect to the number of existing observers, but the call order of the observers is now the same as the insertion order. Also, adding new observers usually happens in the setup stage of program execution, in which the added performance penalty is not relevant.
Throttle limits the update rate of its input.
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I also added a Throttle transform that limits the input rate. Kinda similar to |
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Merging transforms take multiple producer inputs and merge them into a tuple that can be passed for processing.
Joinemits an output whenever any input is updated, as long as all inputs are below max_age.Zip, on the other hand, emits an output once all inputs have been updated, also observing the age of individual inputs.Repeating transforms keep emitting the input value at given intervals.
Repeatemits whenever an input is received and keeps repeating the value everyintervalmilliseconds.RepeatStoppingworks likeRepeatbut includes amax_age. If no input is received withinmax_agemilliseconds, it stops repeating.RepeatExpringworks likeRepeatStopping, but instead of stopping altogether, it continues repeatingexpired_valueoncemax_ageis reached. And finally,RepeatConstantRateworks likeRepeatExpiring, but always emits at regular intervals, regardless of when new input as been received.