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Move page script moved page USERAPI Memorizing table to WoW:USERAPI Memorizing table without leaving a redirect
(New page: {{userfunc}} __NOTOC__ A '''memorizing table''' is a normal table with a metatable designed to find missing values and save them. The mechanics are transparent to the caller, it thinks i...) |
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A '''memoizing table''' is a normal table with a metatable designed to find missing values and save them. The mechanics are transparent to the caller, it thinks it's just doing a normal lookup. | |||
Memoizing tables are especially handy for caching values which are expensive to lookup or calculate. The developer generally expects that for a given index the value won't change, so it does not need to be recomputed after the first lookup. | |||
== Code == | == Code == | ||
For this example we will cache the name results from a [[API GetItemInfo|GetItemInfo]] call. | For this example, we will cache the name results from a [[API GetItemInfo|GetItemInfo]] call. | ||
local names = setmetatable({}, { | local names = setmetatable({}, { | ||
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return name | return name | ||
end, | end, | ||
}) | }) | ||
== How it works == | == How it works == | ||