| Allegro CL version 8.2 Unrevised from 8.1 to 8.2. 8.1 version |
Arguments: name &optional env
This function returns information about the block named by
name in the environment
env. env may an environment
object or nil
, indicating the null lexical
environment.
Three values are returned: :block
, a locative, and
declaration list. The car of the locative is a catch tag (usually a
unique cons cell) and the cdr of the locative is nil
as long as the block is within scope. As part of
the cleanup when the block is exiting, the cdr of the block's
locative is set to 'invalid
, which marks the block
as being no longer in scope.
See environments.htm for more information on environments.
Copyright (c) 1998-2016, Franz Inc. Oakland, CA., USA. All rights reserved.
This page was not revised from the 8.1 page.
Created 2010.1.21.
| Allegro CL version 8.2 Unrevised from 8.1 to 8.2. 8.1 version |