Quote: be careful of making members virtual; they cause subtle and complex observable behaviors and subclass interactions [»cwalK_2006]

Quote: class inheritance doesn't preserve encapsulation because functions are scattered among classes with many interdependencies [»wyboN4_1990]

Quote: limit application developers to aggregation and encapsulation; only experts should subclass via inheritance and additive specialization

Quote: descendants of a class gains access to its implementation; may redefine as needed [»meyeB9_1990]

Quote: components involved in inheritance had six times more defects than those without [»hattL5_1998]

Quote: implementation inheritance is a bad idea that binds implementations together so that all classes must be understood together; like 'goto' statements [»oustJK3_1998]

Quote: if add or modify a subclass must retest all inherited methods; they have a new context [»perrDE1_1990]

Quote: inheritance hides the effect of change through a complicated, inheritance model; non-inheritance is more direct [»perrDE1_1990]

Quote: in paper solutions, entities have state and they respond to requests for action; but no use of inheritance or polymorphism; object-oriented is not natural [»paneJF2_2001]

Quote: the use of inheritance for conceptual specialization is rarely realized [»taivA9_1996]

Quote: rich subclassing of objects may be undesirable; users don't need the derivation and most find the process frustrating [»pausR10_1992]

Quote: with single inheritance, shared information tends to move towards the root of the tree; root classes become a global name space and a muddle [»stroB_1991]

Quote: functional decomposition is insufficient for data abstraction because interesting data needs to be global; like single inheritance [»stroB_1991]

Quote: although inheritance is central to object-oriented programming, researchers rarely agree on its meaning and usage [»taivA9_1996]

Quote: with cancellation, Clyde the elephant could be just about anything, including a giraffe; the Elephant node is just a collection of properties [»bracRJ10_1983]

Quote: templates and type inheritance need each other. Without templates, derivation of similar class is tedious; without inheritance, templates lead to massive replication

Quote: encapsulation and inheritance requires more testing because methods have more execution contexts; antidecomposition

Quote: Smalltalk's inheritance mechanism makes it difficult to find which method is executed, especially if the receiver's class is unknown [»nielJ5_1989, OK]

Quote: use properties to distinguish types that have the same operations; e.g., the property 'LIFO' for type 'stack'; simulate with dummy functions [»rodrNR8_1993]

Quote: IS-A links should be independent of inheritance; inheritance is a implementation issue [»bracRJ10_1983]