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Add link to weak reference.

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This commit is contained in:
Leif Andersen 2016-02-05 18:34:23 -05:00
parent d28ab71058
commit f02fd8f338
1 changed files with 3 additions and 1 deletions
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4
gui-lib/framework/preferences.rkt
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@ -406,7 +406,9 @@ the state transitions / contracts are:
invoked, removes the callback from this preference. invoked, removes the callback from this preference.
If @racket[weak?] is true, the preferences system will only hold on to If @racket[weak?] is true, the preferences system will only hold on to
the callback weakly. the callback
@tech[#:key "weak references"
#:doc '(lib "scribblings/reference/reference.scrbl")]{weakly}.
The callbacks will be called in the order in which they were added. The callbacks will be called in the order in which they were added.