fix to ms to make timing dictionaries more general dictionaries can n…

[sdrogers]

…ow take single values as arguments (all scans will be the same time) or callable objects, in which case it is called (to e.g. have random times)

[RonanDaly]

Any reason not to have all values callable? Efficiency?

[sdrogers]

Two reasons:

1. Regression - old stuff will stop working.
2. It's useful to be able to supply constants (although that could be callable)

[RonanDaly]

Make it a property! No need to have parentheses.

class duration:
 @property
 def value(self):
  return 42

>>> d = duration()
>>> c = d.value
>>> c
42

[sdrogers]

guess that's fine if they are our own methods, but say we want to use something like: np.random.rand()? We'd have to wrap it up in another class?

[RonanDaly]

Yes, and delegate. But one class will do for everything if methods are passed in - otherwise, more complex calculations could be done ahead of time and released as needed.

[sdrogers]

Sorry - don't follow. Can you give an example of how I'd populate the dictionary where I wanted ms1 scans to get times drawn from np.random.rand? e.g. di = {1: ????} Thanks!

[RonanDaly]

On further thoughts, looks like it might not be possible (easily). Need to brush up on my python!

[sdrogers]

ok, going to merge