GRASP (object-oriented design)

General Responsibility Assignment Software Patterns (or Principles), abbreviated GRASP, is a set of "nine fundamental principles in <a href="/facts/Object-oriented_design/erWk0mUW">object design</a> and responsibility assignment": 6  first published by <a href="/facts/Craig_Larman/ErpJVf5a">Craig Larman</a> in his 1997 book Applying UML and Patterns.
The different patterns and principles used in GRASP are controller, creator, indirection, information expert, low <a href="/facts/Coupling_(computer_science)/QEeSaXF3">coupling</a>, high <a href="/facts/Cohesion_(computer_science)/4hgqzcsf">cohesion</a>, <a href="/facts/Polymorphism_(object-oriented_programming)/S3cCKsVT">polymorphism</a>, protected variations, and pure fabrication. All these patterns solve some <a href="/facts/Software/RP79lVSW">software</a> problems common to many <a href="/facts/Software_development/UUfsAaYY">software development</a> projects. These techniques have not been invented to create new ways of working, but to better document and standardize old, tried-and-tested <a href="/facts/Computer_programming/QmSsFnu0">programming</a> principles in object-oriented design. 
<a href="/facts/Craig_Larman/ErpJVf5a">Larman</a> states that "the critical design tool for software development is a mind well educated in design principles. It is not <a href="/facts/UML/qdd3WcLv">UML</a> or any other technology.": 272  Thus, the GRASP principles are really a mental toolset, a learning aid to help in the design of object-oriented software.

GRASP (object-oriented design) open-in-new

GRASP (object-oriented design)