@import url(http://www.google.com/cse/api/branding.css); CLU is a programming language created at MIT by Barbara Liskov and her students between 1974 and 1975. All objects in a CLU program live in the heap, and memory management is automatic. A distinctive feature of CLU iterators is that they are implemented as coroutines, with each value being provided to the caller via a yield statement. In the same way, functions could return several values, like x,y,z = f(t). ja:CLU In the same way, functions could return several values, like x,y,z=f(t). it:CLU (linguaggio) It was notable for its use of constructors for abstract data types that included the code that operated on them, a key step in the direction of object-oriented programming (OOP). The cluster heading gives the name of the new type and the set of operations which are allowed on that type. CLU also includes exception handling, based on various attempts in other languages; exceptions are raised using signal and handled with except. It was notable for its use of constructors for abstract data types that included the code that operated on them, a key step in the direction of object-oriented programming (OOP). CLU's exception handling mechanisms influenced later languages like C++ and Java. This problem is not unique to CLU, but it is surprising that so many languages have lacked this feature — given the centralness in ALGOL of giving scope to variables, it seems that giving scope to cluster/object names would be an obvious extension. A cluster also defines a type that can be named outside the cluster in this case, "complex_number", but its representation type rep is hidden from external clients. CLU does not perform implicit type conversions. However many of the other features of OOP are (intentionally) missing, notably inheritance, and the language is also hindered by a sometimes frustrating if elegant syntax. Clu Programming Language. CLU is a new programming language designed to support the use of abstractions in program construction. For instance, writing x,y=y,x would exchange values of x and y. Not much is really known about Clu, except for the fact that Flynn used Clu a lot for hacking and for fixing Flynn's banking statements and phone bill problems. It was notable for its use of constructors for abstract data types that included the code that operated on them, a key step in the direction of object-oriented programming (OOP). Post by Mark Trego The games soon became fantastic sellers and Dillinger was promoted to Executive V.P. Source: http://en.wikipedia.org/wiki/CLU_programming_language, Tracing the History of the Computer - CLU Programming Language, http://en.wikipedia.org/wiki/CLU_programming_language. This function returns objects from a collection serially, offering an identical application programming interface regardless of the data being used or processed. Also unlike most other languages that provide exception handling, exceptions in CLU are considered part of ordinary execution flow and are considered a "normal" and efficient typesafe way to break out of loops or return from functions; this allows for direct assignment of return values "except when" other conditions apply.

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