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zl:remprop
446
(color blue near-to bar)
If plist has no indicator-property, then remprop has no side-effect and
returns nil.
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zl:remprop plist indicator Function
This removes plist's indicator property, by splicing it out of the property
list. It returns that portion of the list inside plist of which the former
indicator-property was the car. The car of what zl:remprop returns is
what zl:get would have returned with the same arguments. If plist is a
symbol, the symbol's associated property list is used. For example, if the
property list of foo was:
then:
(color blue height six-three near-to bar)
(zl:remprop 'faa 'height) => (six-three near-to bar)
and foo's property list would be:
(color blue near-to bar)
If plist has no indicator-property, then zl:remprop has no side-effect and
returns nil.
For a table of related items: See the section "Functions That Operate on
Property Lists" in Symbolics Common Lisp: Language Concepts.
zl:remq item list &optional n Function
(zl:remq item list) returns a copy of list with all occurrences of item
removed. eq is used for the comparison. zl:remq is the non-destructive
version of zl:delq. Examples:
(setq x '(a b c d e f»
(zl :remq 'b x) => (a c d e f)
x => (a b c d e f)
(zl :remq ~b '(a b c b a b) 2) => (a c a b)
i[n] instances of item are deleted. n is allowed to be zero. If n is greater
than or equal to the number of occurrences of item in the list, all occurrences
of item in the list are deleted.
For a table of related items: See the section "Functions for Modifying
Lis~s" in Symbolics Common Lisp: Language Concepts.
flavor:rename-instance-variable flavor-name old new Function
Renames an instance variable old to a new name new for the given
flavor-name. When this is done, the value of the old instance variable is
carried over to the new instance variable. Any old instances are updated to