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==tonumber== {{FunctionDoc |Name=tonumber |Parameters=Variant arg |ReturnType=Variant<number,nil> |Description=Attempts to convert the ''arg'' into a {{type|number}} in base-10. If it cannot be converted, this function returns nil. }} {{FunctionDoc |Name=tonumber |Parameters=Variant arg, int base |Description=Attempts to convert the ''arg'' into a {{type|number}} with a specified ''base'' to interpret the value in. The base may be any integer between 2 and 36, inclusive. In bases above 10, the letter 'A' (in either upper or lower case) represents 10, 'B' represents 11, and so forth, with 'Z' representing 35. In base 10 (the default), the {{type|number}} may have a decimal part, as well as an optional exponent part. In other bases, only unsigned integers are accepted. |Example= {{Code and output|code= print(tonumber(255)) print(tonumber (11111111, 2)) print(tonumber ("FF", 16)) |output= 255 255 255 }} }}

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