Fast loading of very large "symbol" tables
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- Subject: Fast loading of very large "symbol" tables
- From: Canute Bigler <biglerc@...>
- Date: 2008年10月12日 15:20:50 -0400
I have need to provide a mapping of "names" to integer values on a
reasonably large scale (hundreds of thousands). The name to number
mapping is known at the compile time of my host program (C++). My basic
naive approach is to generate a lua source file with the mapping in a
table and load that script file into the host environment at run-time.
This approach has a substantial time cost to it and seems like it would
be more or less unnecessary since the data is static, at least for that
particular version of the program.
Example:
field = {
Field1 = 12345,
Field2 = 45678,
-- thousands of additional fields and subtables.
}
-- my intended usage. setData is an exposed API function that takes an
integer field value and some data to set it to
setData(field.Field1, "abc")
I'm looking for some advice about how I could have this table of
mappings available in my lua environment without having to pay the cost
of loading the script every time my program runs.
Thank you in advance