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24 lines
945 B
Markdown
24 lines
945 B
Markdown
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# Lua Log Files
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A data log file based on Lua statements. High performance. Example from `test.lua`:
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```lua
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local logfile = persistence.lua_log_file.new(mod.get_resource"logfile.test.lua", {})
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logfile:init()
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logfile.root = {}
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logfile:rewrite()
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logfile:set_root({a = 1}, {b = 2, c = 3})
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logfile:close()
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logfile:init()
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assert(table.equals(logfile.root, {[{a = 1}] = {b = 2, c = 3}}))
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```
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Both strings and tables are stored in a reference table. Unused strings won't be garbage collected as Lua doesn't allow marking them as weak references.
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This means that setting lots of temporary strings will waste memory until you call `:rewrite()` on the log file. An alternative is to set the third parameter, `reference_strings`, to `false` (default value is `true`):
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```lua
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persistence.lua_log_file.new(mod.get_resource"logfile.test.lua", {}, false)
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```
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This will prevent strings from being referenced, possibly bloating file size, but saving memory.
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