Consider how to avoid recalculating constraint diffs for everything when making a change

[ScottRobbins]

So if you have a scenario where you have a complicated view and one thing changes.

• Do we want to do the work of recalculating things for all components under that viewlayout?
• Is there a way to only reload certain components without potentially causing layout issues because of the rest of the layout not changing? (programmer errors)
• If they explicitly reload certain parts, does it defeat the purpose of the library by not making it completely declarative? Is there a way to still make this declarative?

[ScottRobbins]

this is involved with https://github.com/HotCocoaTouch/DeclarativeLayout/issues/39