3-tier |
data<->business logic<->presentation separation (strict relationships) |
abstract_factory |
use a generic function with specific factories |
adapter |
adapt one interface to another using a whitelist |
borg |
a singleton with shared-state among instances |
bridge |
a client-provider middleman to soften interface changes |
builder |
call many little discrete methods rather than having a huge number of constructor parameters |
catalog |
general methods will call different specialized methods based on construction parameter |
chain |
apply a chain of successive handlers to try and process the data |
command |
bundle a command and arguments to call later |
composite |
encapsulate and provide access to a number of different objects |
decorator |
wrap functionality with other functionality in order to affect outputs |
facade |
use one class as an API to a number of others |
factory_method |
delegate a specialized function/method to create instances |
flyweight |
transparently reuse existing instances of objects with similar/identical state |
graph_search |
(graphing algorithms, not design patterns) |
iterator |
structure repeated, identical calls as a generator |
mediator |
an object that knows how to connect other objects and act as a proxy |
memento |
generate an opaque token that can be used to go back to a previous state |
mvc |
model<->view<->controller (non-strict relationships) |
observer |
provide a callback for notification of events/changes to data |
pool |
preinstantiate and maintain a group of instances of the same type |
prototype |
use a factory and clones of a prototype for new instances (if instantiation is expensive) |
proxy |
an object funnels operations to something else |
publish_subscribe |
a source syndicates events/data to 0+ registered listeners |
state |
logic is org'd into a discrete number of potential states and the next state that can be transitioned to |
strategy |
selectable operations over the same data |
template |
an object imposes a structure but takes pluggable components |
visitor |
invoke a callback for all items of a collection |