Write numbers to a file in lua in binary format

Question

I have a big array with numbers I would like to write to a file.

But if I do this:

local out = io.open(\"file.bin\", \"wb\")
local i = 4324234
out:wr         


        

Answer 1

You could use lua struct for more fine-grained control over binary conversion.

local struct = require('struct')
out:write(struct.pack('i4',0x123432))