In Lua, what is the method for changing a string into a boolean?

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In Lua, the method for changing a string into a boolean is to use the function "tonumber()". Specifically, the function can be used as follows:

• To convert 'true' or 'false' as a string to a boolean value, we can use the expression "tonumber(s)~=0" where s is the string ('true' or 'false').
• If s is any other string, the tonumber() function would return nil, which is equivalent to false in a boolean context.