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36 lines
1.1 KiB
Lua
36 lines
1.1 KiB
Lua
local Observable = require "rx.observable"
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local util = require "rx.util"
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--- Determine whether all items emitted by an Observable meet some criteria.
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-- @arg {function=identity} predicate - The predicate used to evaluate objects.
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function Observable:all(predicate)
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predicate = predicate or util.identity
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return Observable.create(function(observer)
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local subscription
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local function onNext(...)
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util.tryWithObserver(observer, function(...)
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if not predicate(...) then
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observer:onNext(false)
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if subscription then
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subscription:unsubscribe()
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end
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observer:onCompleted()
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end
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end, ...)
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end
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local function onError(e)
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return observer:onError(e)
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end
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local function onCompleted()
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observer:onNext(true)
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return observer:onCompleted()
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end
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subscription = self:subscribe(onNext, onError, onCompleted)
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return subscription
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end)
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end
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