What does Liskov Substitution Principle mean?
Definitions for Liskov Substitution Principle
liskov sub·sti·tu·tion prin·ci·ple
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Wikipedia
Liskov substitution principle
The Liskov substitution principle (LSP) is a particular definition of a subtyping relation, called strong behavioral subtyping, that was initially introduced by Barbara Liskov in a 1987 conference keynote address titled Data abstraction and hierarchy. It is based on the concept of "substitutability" – a principle in object-oriented programming stating that an object (such as a class) may be replaced by a sub-object (such as a class that extends the first class) without breaking the program. It is a semantic rather than merely syntactic relation, because it intends to guarantee semantic interoperability of types in a hierarchy, object types in particular. Barbara Liskov and Jeannette Wing described the principle succinctly in a 1994 paper as follows: Subtype Requirement: Let ϕ ( x ) {\displaystyle \phi (x)} be a property provable about objects x {\displaystyle x} of type T. Then ϕ ( y ) {\displaystyle \phi (y)} should be true for objects y {\displaystyle y} of type S where S is a subtype of T. Symbolically:
Numerology
Chaldean Numerology
The numerical value of Liskov Substitution Principle in Chaldean Numerology is: 5
Pythagorean Numerology
The numerical value of Liskov Substitution Principle in Pythagorean Numerology is: 1
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"Liskov Substitution Principle." Definitions.net. STANDS4 LLC, 2024. Web. 29 Apr. 2024. <https://www.definitions.net/definition/Liskov+Substitution+Principle>.
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