ANSI Common Lisp 11 Packages 11.2 Dictionary of Packages
string &optional package
- Arguments and Values:
string - a string.
package - a package designator.
The default is the current package.
symbol - a symbol.
status - one of :inherited, :external, :internal, or nil.
intern enters a symbol named string into package.
If a symbol whose name is the same as string
is already accessible in package, it is returned.
If no such symbol is accessible in package,
a new symbol with the given name is created
and entered into package as an internal symbol,
or as an external symbol if the package is the keyword package;
package becomes the home package of the created symbol.
The first value returned by intern, symbol,
is the symbol that was found or
The meaning of the secondary value, status, is as follows:
(in-package "COMMON-LISP-USER") #<PACKAGE "COMMON-LISP-USER">
(intern "Never-Before") |Never-Before|, NIL
(intern "Never-Before") |Never-Before|, :INTERNAL
(intern "NEVER-BEFORE" "KEYWORD") :NEVER-BEFORE, NIL
(intern "NEVER-BEFORE" "KEYWORD") :NEVER-BEFORE, :EXTERNAL
- See Also:
Section 2.3.4 Symbols as Tokens
intern does not need to do any name conflict checking
because it never creates a new symbol
if there is already an accessible symbol with the name given.
- Allegro CL Implementation Details:
Allegro CL allows symbols as well as strings as the first argument.. See Extensions
in implementation.htm. Note
that link is to the documentation for the current Allegro CL
version. Replace /current/ in the URL with the Allegro CL version
number to see similar documentation is earlier releases.