Sorted:

problem about measurement-Collection of common programming errors

problem about uicollectionviewcell-Collection of common programming errors

Is there a way to hide/show certain methods when instantiating an object?-Collection of common programming errors

generic function with a “has property X” constraint?-Collection of common programming errors

Allowing an object model to talk to two projects-Collection of common programming errors

OO design, table design-Collection of common programming errors

Getting the name of a sub-class from within a super-class-Collection of common programming errors

problem about windows-protocols-Collection of common programming errors

Improve code readability without performance loss-Collection of common programming errors

problem about masm-Collection of common programming errors