WoW:USERAPI EraseTable: Difference between revisions
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Move page script moved page USERAPI EraseTable to WoW:USERAPI EraseTable without leaving a redirect
m (Added comment about a more effective way to erase a table) |
m (Move page script moved page USERAPI EraseTable to WoW:USERAPI EraseTable without leaving a redirect) |
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{{ | {{userfunc}} | ||
'''EraseTable''' erases a table, often a good way to reduce garbage creation. Note that erasing a table can be more expensive than letting the GC system reclaim it, so one might prefer simply reallocating a new empty table. Also, note that a hash (as opposed to a 1..n integer-index) will NEVER SHRINK. Each key you ever used will use ~40 bytes and keep doing so until the table is destroyed. If you re-use the same keys this is obviously a nonissue. | '''EraseTable''' erases a table, often a good way to reduce garbage creation. Note that erasing a table can be more expensive than letting the GC system reclaim it, so one might prefer simply reallocating a new empty table. Also, note that a hash (as opposed to a 1..n integer-index) will NEVER SHRINK. Each key you ever used will use ~40 bytes and keep doing so until the table is destroyed. If you re-use the same keys this is obviously a nonissue. | ||
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for i in pairs(t) do t[i] = nil end | for i in pairs(t) do t[i] = nil end | ||
end | end | ||