Discussion: Should children automaticaly traverse more of the object

[DominicOram]

Currently the children function on a device checks if the Device has any direct attributes that are Devices. This results in the following:

class MyDevice(Device):
    def __init__():
        self.channels = [epics_signal_r(float, f"A"), epics_signal_r(float, f"B")]

my_device.connect() # channels will not get connected here

The fix for this is something like:

class MyDevice(Device):
    def __init__():
        self.channels = [epics_signal_r(float, f"A"), epics_signal_r(float, f"B")]
   def children():
       for signal in self.channels:
           yield signal
       return super().children()

@coretl, @callumforrester - I feel like we may have discussed this already but needs writing down

Acceptance Criteria

• We decide if children should be more clever
• Decision and reasoning is documented
• If the above behaviour remains it should be documented as a gotcha

[coretl]

If you use a DeviceVector (and please write docs for it too!) then this will work

[callumforrester]

Docs for DeviceVector in #183

@DominicOram does it satisfy your requirements?

[DominicOram]

Yes, happy to close this off