suzanne.soy/racket
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

Restore docs about impersonator-of? and immutable hash tables.

Browse Source 
In the impersonate-hash docs, this time.
This commit is contained in:
Vincent St-Amour 2017-04-28 14:08:17 -05:00
parent 206ced8d47
commit 4ffd2fc1b8
1 changed files with 8 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

8
pkgs/racket-doc/scribblings/reference/chaperones.scrbl
View File

@ -537,6 +537,14 @@ Pairs of @racket[prop] and @racket[prop-val] (the number of arguments
to @racket[impersonate-hash] must be odd) add impersonator properties
or override impersonator-property values of @racket[hash].
In the case of an immutable hash table, two impersonated hash tables count as
``the same value'' (for purposes of @racket[impersonator-of?]) when their
redirection procedures were originally attached to a hash table by the same
call to @racket[impersonate-hash] or @racket[chaperone-hash] (and potentially
propagated by @racket[hash-set], @racket[hash-remove], or @racket[hash-clear]),
as long as the content of the first hash table is @racket[impersonator-of?] of
the second hash table.
@history[#:changed "6.3.0.11" @elem{Added the @racket[equal-key-proc]
argument.}]}