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Updated performance note on functional.lua

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Max Cahill 2021-06-25 13:31:33 +10:00
parent af919da379
commit 009beadc68
1 changed files with 12 additions and 7 deletions
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19
functional.lua
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@ -1,14 +1,19 @@
--[[
functional programming facilities
notes:
be careful about creating closures in hot loops.
this is this module's achilles heel - there's no special
syntax for closures so it's not apparent that you're suddenly
allocating at every call
be wary of use in performance critical code under luajit
reduce has a similar problem, but at least arguments
there are clear!
absolute performance is this module's achilles heel;
you're generally allocating more garbage than is strictly necessary,
plus inline anonymous will be re-created each call, which is NYI
this can be a Bad Thing and means probably this isn't a great module
to heavily leverage in the middle of your action game's physics update
but, there are many cases where it matters less than you'd think
generally, if it wasn't hot enough to get compiled anyway, you're fine
(if all this means nothing to you, just don't worry about it)
]]
local path = (...):gsub("functional", "")