In Lua 5.2 or earlier, both tostring(10) and tostring(10.0) result as the string "10".
In Lua 5.3, this has changed:
print(tostring(10)) -- "10"
print(tostring(10.0)) -- "10.0"
That's because Lua 5.3 introduced the integer subtype. From Changes in the Language:
The conversion of a float to a string now adds a
.0suffix to the result if it looks like an integer. (For instance, the float2.0will be printed as2.0, not as2.) You should always use an explicit format when you need a specific format for numbers.
In Lua 5.2 or earlier, both tostring(10) and tostring(10.0) result as the string "10" . In Lua 5.3, this has changed: print(tostring(10)) -- "10" ...
In Lua, you can convert a number to a string using the tostring() function. 10 ...
Lua just does automatically conversion between strings and numbers. If you want ensure the type, use a = tonumber(a). – xpol. Feb 26, 2016 at 3:52.
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