I use UIView+Positioning, which exposes x, y, width, height, right, bottom, cent...

austinl on March 2, 2014 | parent | context | favorite | on: Laying Out iOS UIs in Code

    I use UIView+Positioning, which exposes x, y, width,    
    height, right, bottom, centerX, and centerY as both 
    setters and getters.

IB/code aside, this is convenient. All of those properties are read-only by default, and that's always seemed counterintuitive to me (though I'm sure there's some purpose I'm missing).

nsmnsf on March 2, 2014 [–]

Those are struct members, not properties.