Common Lisp language was developed as a standardized and improved successor of Maclisp.
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34 Facts About Common Lisp
1.
2.
Common Lisp sought to unify, standardise, and extend the features of these MacLisp dialects.
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3.
Common Lisp is not an implementation, but rather a language specification.
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4.
Several implementations of the Common Lisp standard are available, including free and open-source software and proprietary products.
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5.
Common Lisp includes CLOS, an object system that supports multimethods and method combinations.
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6.
Common Lisp is extensible through standard features such as Lisp macros and reader macros.
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7.
Common Lisp provides partial backwards compatibility with Maclisp and John McCarthy's original Lisp.
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8.
Work on Common Lisp started in 1981 after an initiative by ARPA manager Bob Engelmore to develop a single community standard Lisp dialect.
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9.
Various extensions and improvements to Common Lisp have been provided by implementations and libraries.
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10.
Common Lisp uses bignums to represent numerical values of arbitrary size and precision.
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11.
Common Lisp automatically coerces numeric values among these types as appropriate.
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12.
Symbols in Common Lisp are often used similarly to identifiers in other languages: to hold the value of a variable; however there are many other uses.
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13.
Boolean values in Common Lisp are represented by the self-evaluating symbols T and NIL.
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14.
Common Lisp has support for dynamically scoped variables, which are called special variables.
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15.
Local function bindings in Common Lisp have lexical scope, and variable bindings have lexical scope by default.
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16.
Common Lisp macros are capable of what is commonly called variable capture, where symbols in the macro-expansion body coincide with those in the calling context, allowing the programmer to create macros wherein various symbols have special meaning.
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Scheme dialect of Common Lisp provides a macro-writing system which provides the referential transparency that eliminates both types of capture problem.
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18.
Common Lisp solves the problem of the shadowing of standard operators and functions by forbidding their redefinition.
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19.
Common Lisp includes a toolkit for object-oriented programming, the Common Lisp Object System or CLOS.
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20.
Common Lisp allows both individual Lisp functions to be compiled in memory and the compilation of whole files to externally stored compiled code.
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21.
Several implementations of earlier Common Lisp dialects provided both an interpreter and a compiler.
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22.
Common Lisp requires that both the interpreter and compiler use lexical scoping by default.
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23.
The Common Lisp standard describes both the semantics of the interpreter and a compiler.
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24.
Common Lisp allows type declarations and provides ways to influence the compiler code generation policy.
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25.
Several Common Lisp implementations are implementing eval using their compiler.
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26.
The Common Lisp compiler is available at runtime to compile files or individual functions.
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27.
Common Lisp is most frequently compared with, and contrasted to, Scheme—if only because they are the two most popular Lisp dialects.
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28.
Common Lisp is a general-purpose programming language, in contrast to Lisp variants such as Emacs Lisp and AutoLISP which are extension languages embedded in particular products.
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29.
Unlike many earlier Lisps, Common Lisp uses lexical variable scope by default for both interpreted and compiled code.
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30.
Common Lisp is sometimes termed a Lisp-2 and Scheme a Lisp-1, referring to CL's use of separate namespaces for functions and variables.
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31.
Common Lisp is defined by a specification rather than by one implementation.
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32.
Common Lisp has been designed to support incremental compilers, file compilers and block compilers.
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33.
The misconception that Common Lisp is a purely interpreted language is most likely because Common Lisp environments provide an interactive prompt and that code is compiled one-by-one, in an incremental way.
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34.
Common Lisp is used to develop research applications, for rapid development of prototypes or for deployed applications.
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