zl:1 - FTP

481 shadowing-import
shadowing-import symbols &optional package Function
This is like import, but it does not signal an error even if the importation
of a symbol would shadow some symbol already available in the package. If
a distinct symbol with the, same name is already present in the package, it
is removed (using unintern). The imported symbol is placed on the
shadowing-symbols list of package.
The symbols argument should be a list of symbols or a single symbol. If
symbols is nil, it is treated like an empty list. package can be a package
object or the name of a package (a symbol or a string). If unspecified,
package defaults to the value of *package*. Returns t.
shadowing-import should be used with caution. It changes the state of
the package system in such a way that the consistency rules do not hold
across the change.
shiftf &rest references-and-values Macro
Each references-and-values can be any form acceptable as a generalized variable
to setf. All the forms are treated as a shift register; the last
references-and-values is shifted in from the right, all values shift over to
the left one place, and the value shifted out of the first
references-and-values position is returned.
For example as seen in a Lisp Listener:
(setq forces (list army navy air-force marines»
(ARMY NAVY AIR-FORCE MARINES)
(shiftf (car forces) (cadr forces 'new-york-cops»
ARMY
forces
(NAVY NEW-YORK-COPS AIR-FORCE MARINES)
(shiftf (cadr forces) (cddr forces) 'monterey-lifeguards)
NEW-YORK-COPS
forces
(NAVY (AIR-FORCE MARINES) . MONTEREY-LIFEGUARDS)
I
short-float
Type Specifier
short-float is the type specifier symbol for the predefined Lisp singleprecision
floating-point number type.
The type short-float is a subtype of the type float. In Symbolics Common
Lisp short-float is identical with single-float.
The type short-float is disjoint with the types long-float and double-float.
Examples: