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38 lines
1.3 KiB
Lua

local Observable = require "rx.observable"
local Subscription = require "rx.subscription"
local util = require "rx.util"
--- Returns a new Observable that produces the values of the original delayed by a time period.
-- @arg {number|function} time - An amount in milliseconds to delay by, or a function which returns
-- this value.
-- @arg {Scheduler} scheduler - The scheduler to run the Observable on.
-- @returns {Observable}
function Observable:delay(time, scheduler)
time = type(time) ~= "function" and util.constant(time) or time
return Observable.create(function(observer)
local actions = {}
local function delay(key)
return function(...)
local arg = util.pack(...)
local handle = scheduler:schedule(function()
observer[key](observer, util.unpack(arg))
end, time())
table.insert(actions, handle)
end
end
local subscription = self:subscribe(delay("onNext"), delay("onError"), delay("onCompleted"))
return Subscription.create(function()
if subscription then
subscription:unsubscribe()
end
for i = 1, #actions do
actions[i]:unsubscribe()
end
end)
end)
end