The [file->isOpen] method returns true if the [file] object has an open connection to a file, otherwise it returns false.
local(f) = file(...) #f->isOpen
The code below shows the result of calls to [file->isOpen] at various times in the life of the [file] object
local(my_file) = file('/rhino/test.txt') #my_file->isOpen #my_file->openRead '<br />' #my_file->isOpen #my_file->close '<br />' #my_file->isOpen
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