26 Mar
2011
26 Mar
'11
2:03 a.m.
On Sat, 26 Mar 2011, Kazimir Majorinc wrote:
"DEFVAR and DEFPARAMETER do the combined service of
- in some implementations, recording the "definitional home" of the
variable
- declaring the indicated variable special in compiler and runtime
- assigning the variable (either conditionally, as in DEFVAR, which
assigns only in the case that the variable is unbound, or unconditionally, as in DEFPARAMETER). "
K. Pitman, comp.lang.lisp, 26. April 2001.
What "recording the definitional home" means? Why "in some implementations?"
Without seeing the context, I read a couple things into this.
- source location for stuff like M-. - compilation unit which creates memory for and initializes the variable
Later, Daniel