0.9.15.33:
[sbcl.git] / doc / manual / beyond-ansi.texinfo
index c79ee95..93929ec 100644 (file)
@@ -118,6 +118,44 @@ The following definition is acceptable:
 @end lisp
 and leads to a class whose instances are funcallable and have one slot.
 
+@item
+the requirement that ``No portable class @math{C_p} may inherit, by
+virtue of being a direct or indirect subclass of a specified class, any
+slot for which the name is a symbol accessible in the
+@code{common-lisp-user} package or exported by any package defined in
+the ANSI Common Lisp standard.'' is interpreted to mean that the
+standardized classes themselves should not have slots named by external
+symbols of public packages.
+
+The rationale behind the restriction is likely to be similar to the ANSI
+Common Lisp restriction on defining functions, variables and types named
+by symbols in the Common Lisp package: preventing two independent pieces
+of software from colliding with each other.
+
+@item
+@findex slot-value-using-class
+@findex sb-mop:slot-value-using-class
+@findex (setf slot-value-using-class)
+@findex (setf sb-mop:slot-value-using-class)
+@findex slot-boundp-using-class
+@findex sb-mop:slot-boundp-using-class
+specializations of the @code{new-value} argument to @code{(setf
+sb-mop:slot-value-using-class)} are not allowed: all user-defined
+methods must have a specializer of the class @code{t}.
+
+This prohibition is motivated by a separation of layers: the
+@code{slot-value-using-class} family of functions is intended for use in
+implementing different and new slot allocation strategies, rather than
+in performing application-level dispatching.  Additionally, with this
+requirement, there is a one-to-one mapping between metaclass, class and
+slot-definition-class tuples and effective methods of @code{(setf
+slot-value-using-class)}, which permits optimization of @code{(setf
+slot-value-using-class)}'s discriminating function in the same manner as
+for @code{slot-value-using-class} and @code{slot-boundp-using-class}.
+
+Note that application code may specialize on the @code{new-value}
+argument of slot accessors.
+
 @end itemize
 
 @node  Support For Unix
@@ -130,6 +168,31 @@ the @code{sb-ext:posix-getenv} function.
 
 @include fun-sb-ext-posix-getenv.texinfo
 
+External programs can be run with @code{sb-ext:run-program}.
+
+@include fun-sb-ext-run-program.texinfo
+
+@include fun-sb-ext-process-p.texinfo
+
+@include fun-sb-ext-process-input.texinfo
+
+@include fun-sb-ext-process-output.texinfo
+
+@include fun-sb-ext-process-error.texinfo
+
+@include fun-sb-ext-process-alive-p.texinfo
+
+@include fun-sb-ext-process-status.texinfo
+
+@include fun-sb-ext-process-wait.texinfo
+
+@include fun-sb-ext-process-exit-code.texinfo
+
+@include fun-sb-ext-process-core-dumped.texinfo
+
+@include fun-sb-ext-process-close.texinfo
+
+@include fun-sb-ext-process-kill.texinfo
 
 @node  Customization Hooks for Users
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