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Diffstat (limited to 'txr.1')
| -rw-r--r-- | txr.1 | 43 |
1 files changed, 43 insertions, 0 deletions
@@ -5802,6 +5802,49 @@ resolving the function and variable references encountered in the expression. The object nil can be specified as an environment, in which case the evaluation takes place in the global environment. +See also: the make-env function. + +.SS Function make-env + +.TP +Syntax: + + (make-env [<variable-bindings> [<function-bindings> [<next-env>]]]) + +.TP +Description: + +The make-env function creates an environment object suitable as the <env> parameter. + +The <variable-bindings> and <function-bindings> parameters, if specified, +should be association lists, mapping symbols to objects. The objects in +<function-bindings> should be functions, or objects callable as functions. + +The <next-env> argument, if specified, should be an environment. + +Note: bindings can also be added to an environment usign the env-vbind +and env-fbind functions. + +.SS Functions env-vbind and env-fbind + +.TP +Syntax: + + (env-vbind <env> <symbol> <value>) + (env-fbind <env> <symbol> <value>) + +.TP +Description: + +These functions bind a symbol to a value in either the function or variable space +of environment <env>. + +Values established in the function space should be functions or objects that +can be used as functions such as lists, strings, arrays or hashes. + +If <symbol> already exists in the environment, in the given space, then its +value is updated with <value>. + .SH MUTATION .SS Operators inc, dec, set, push, pop, flip and del |