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takikawa/gist:5800388

Created June 17, 2013 21:00
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gistfile1.rkt
$ racket -I typed/racket
Welcome to Racket v5.3.4.12.
-> (require typed/framework)
-> (require typed/racket/gui)
-> ((inst canvas:wide-snip-mixin #:row (init [parent (Instance Dialog%)] [editor (Instance Text:Basic%)])) editor-canvas%)
; wide-snip-mixin: argument class does not implement interface
; argument: #<class:editor-canvas%>
; interface name: #<interface:basic<%>>
; [,bt for context]
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