Semi-colons in Lua are generally only required when writing multiple statements on a line. So for example: Alternatively written as: Off the top of my head, I can’t remember any other time in Lua where I had to use a semi-colon. Edit: looking in the lua 5.2 reference I see one other common place where … Read more
You are looking for the insert function, found in the table section of the main library.
print(math.floor(12.5928 * 10) / 10)
Which is the best efficient way to round up a number and then truncate it (remove decimal places after rounding up)? for example if decimal is above 0.5 (that is, 0.6, 0.7, and so on), I want to round up and then truncate (case 1). Otherwise, I would like to truncate (case 2)
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: 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 .0 suffix to the result if it looks like an integer. (For instance, the float 2.0 will be printed as 2.0, not … Read more
With “or”. As the Lua manual clearly states.
Use io.read() Beware that the function can be customised with different parameters. Here are some examples.
Use the tonumber function. As in a = tonumber(“10”).
You should convert your string to a number, if you know for sure that it should be a number, and if there is no reason for it to be a string. Here’s how to do a comparison for a range: Notice the and. Most programming languages don’t expand the form x < y < z … Read more
Feel free to browse the Lua Wiki on table serialization. It lists several ways on how to dump a table to the console. You just have to choose which one suits you best. There are many ways to do it, but I usually end up using the one from Penlight: