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CLU    
(CLUster) An {object-oriented} programming language
developed at {MIT} by {Liskov} et al in 1974-1975.

CLU is an {object-oriented} language of the {Pascal} family
designed to support {data abstraction}, similar to {Alphard}.
It introduced the {iterator}: a {coroutine} yielding the
elements of a data object, to be used as the sequence of
values in a {for loop}.

A CLU program consists of separately compilable {procedures},
{clusters} and iterators, no nesting. A cluster is a module
naming an {abstract type} and its operations, its internal
representation and implementation. Clusters and iterators may
be generic. Supplying actual constant values for the
{parameters} instantiates the {module}.

There are no {implicit type conversions}. In a cluster, the
explicit type conversions 'up' and 'down' change between the
abstract type and the representation. There is a universal
type 'any', and a procedure force[] to check that an object is
a certain type. Objects may be mutable or {immutable}.

{Exceptions} are raised using 'signal' and handled with
'except'. {Assignment} is by sharing, similar to the sharing
of data objects in {Lisp}. Arguments are passed by
{call-by-sharing}, similar to {call-by-value}, except that the
arguments are objects and can be changed only if they are
mutable. CLU has {own variables} and multiple assignment.

See also {Kamin's interpreters}, {clu2c}.

["CLU Reference Manual", Barbara Liskov et al, LNCS 114,
Springer 1981].

E-mail: Paul R. Johnson .

{Versions for Sun and VAX/VMS
(ftp://pion.lcs.mit.edu/pub/clu/)}. {Portable version
(ftp://mintaka.lcs.mit.edu/pub/dcurtis/)}.

(1994-12-16)


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  • Cal Lutheran Login
    Forgot your password? If you still can't access your account after trying the account tools, please contact the Help Desk
  • CFP vs. CLU vs. ChFC: Find the Right Financial Credential
    The CLU and ChFC credentials require more coursework but have no comprehensive exam The following chart can help you understand the differences and similarities between the three designations
  • CLU® Chartered Life Underwriter Specialized Insurance Designation
    The CLU® certification gives financial professionals an in-depth understanding of life insurance products, underwriting, and solutions as a key part of a goal-based financial plan
  • Commonwealth Club World Affairs
    Members at all levels receive ticket discounts, free programs, members-only events, our travel program, and more—plus, your membership helps support our work as a nonprofit We're America's oldest, largest and most active public forum—a nonpartisan, nonprofit home for ideas Email signup!
  • What Is a Chartered Life Underwriter (CLU)? - SmartAsset
    A chartered life underwriter, or CLU, is a type of financial advisor who specializes in life insurance for estate planning purposes Here's what to know
  • Chartered Life Underwriter (CLU) | Definition Qualifications
    CLU has attained life insurance knowledge that exceeds general and basic life insurance underwriting standards The certification provides advisers with in-depth knowledge of the life insurance industry's underwriting procedure, life insurance law, and general risk assessment guidelines
  • California Lutheran University
    Cal Lutheran offers undergraduate and graduate programs to students who are seeking to grow as individuals while they pursue their passions and discover their purpose
  • How to reap the benefits of the Chartered Life Underwriter designation
    Whether the CLU is worth it depends on the individual professional However, getting the CLU can be a worthwhile investment if you specialize in life insurance, estate planning, and business
  • Chartered Life Underwriter: Key Benefits and Qualifications
    Discover how earning a Chartered Life Underwriter (CLU) designation enhances expertise in life insurance, estate planning, and business strategy, with essential qualifications
  • Your MyCLU Account - Cal Lutheran
    The MyCLU Portal is your gateway to everything you need as a student, including your email, Blackboard classes, Student Planning, payments, and quick links Need Help? Do you have questions about Cal Lutheran? If you do, here are some easy ways for you to contact us and get the answers you need





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