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Allegro CL |
ANSI Common Lisp 3 Evaluation and Compilation 3.1 Evaluation 3.1.1 Introduction to Environments
3.1.1.3 Lexical EnvironmentsA lexical environment for evaluation at some position in a program is that part of the environment that contains information having lexical scope within the forms containing that position. A lexical environment contains, among other things, the following:
The lexical environment that is active at any given position in a program being semantically processed is referred to by definite reference as "the current lexical environment," or sometimes as just "the lexical environment." Within a given namespace, a name is said to be bound in a lexical environment if there is a binding associated with its name in the lexical environment or, if not, there is a binding associated with its name in the global environment. |