Based on the samples/event-emitters.lua:
local Emitter = require('core').Emitter
local emitter = Emitter:new()
emitter:on("foo", function (...)
p("on_foo", ...)
end)
emitter:once("foo", function (...)
p("on_foo2", ...)
end)
--add on_foo3 here
emitter:on("foo", function (...)
p("on_foo3", ...)
end)
p(emitter)
emitter:emit("foo", 1, 2, 3)
emitter:emit("foo", 4, 5, 6)
and the result is:
"on_foo" 1 2 3
"on_foo2" 1 2 3
"on_foo3" 1 2 3
"on_foo" 4 5 6
the on_foo3 is not called.
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