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5.4.7.2. isPosted

Returns .true if the event semaphore is in the posted state, .false if it is currently cleared.

See also methods post and reset.

Example 5.240. EventSemaphore class — isPosted method 
sem = .EventSemaphore~new
say sem~isPosted    -- 0
sem~post
say sem~isPosted    -- 1