Use Designated Initializer Style

Use designated initializer style when initializing a structure.

For example, consider CKFlexboxComponent which accepts a collection of children. Each CKFlexboxComponentChild is a structure that consists of a position, a component, and a size. Instead of initializing contiguous members:

CKComponent *const component =
[CKFlexboxComponent
  newWithView:{}
  size:{}
  style:{}
  children:{
   {
     {0, 0},
     leftComponent,
     {50, 50},
   },
   {
     {50, 0},
     centerComponent,
     {50, 50},
   },
   {
     {100, 0},
     rightComponent,
     {50, 50},
   },
 }]

You should initialize each member by name:

CKComponent *const component =
[CKFlexboxComponent
  newWithView:{}
  size:{}
  style:{}
  children:{
   {
     .component = leftComponent,
     .size = {50, 50},
   },
   {
     .position = {50, 0},
     .component = centerComponent,
     .size = {50, 50},
   },
   {
     .position = {100, 0},
     .component = rightComponent,
     .size = {50, 50},
   },
 }]

Omitted members will be initialized to 0. In the example above the first child explicitly omits position since it will be initialized to {0, 0} by default.