К
предыдущему:
http://www.clisp.org/impnotes/xor.html :
5.7. Function EXT:XOR
This function checks that exactly one of its arguments is non-
NIL
and, if this is the case, returns its value and index in the argument
list as
multiple values, otherwise returns
NIL.
Upd.: см.
Пояснение.
[
original post ] [
comments ] [
как ходить на DW из РФ ]