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18 Νοε 2020 · The operator ~= is exactly the negation of equality (==). See docs. thanks a lot for pointing to the docs pushkin - for some reason googling ~= did not work for me. But now that I see the code, it makes a lot of sense.
20 Νοε 2013 · Lua doesn't actually have any statement or line separators in the grammar. Whitespace is ignored and there are no mandatory semicolons. You can do: io.write("one") io.write("two") Or: io.write("one") io.write("two") And Lua is equally happy with both. Keeping a grammar like that unambiguous is tricky.
Basically dot syntax like object.method(object,args) retrieves object twice, while object:method(arg) retrieves object only once. If object is a global, upvalue or table field, then : is faster than .. . is never faster than :.
24 Ιαν 2012 · To anyone with the same sort of doubts about lua's syntax, i'd recommend checking the documentation here and keeping it handy. It'll be useful while learning. It'll be useful while learning. if-statement
15 Σεπ 2009 · If you are splitting a string in Lua, you should try the string.gmatch () or string.sub () methods. Use the string.sub () method if you know the index you wish to split the string at, or use the string.gmatch () if you will parse the string to find the location to split the string at. Example using string.gmatch () from Lua 5.1 Reference Manual:
25 Μαρ 2024 · Because control structures in Lua only consider nil and false to be false, and anything else to be true, this will always enter the if statement, which is not what you want either. There is no way that you can use binary operators like those provided in programming languages to compare a single variable to a list of values.
2 Μαΐ 2012 · Piezas = Cuadrado2. else if Rotacion == 3 then --this is Line 273. Piezas = Cuadrado3. else if Rotacion == 4 then. Piezas = Cuadrado4. else. io.write("Me Envio una rotacion que no existe? \n"); end. --this end closes the if inside the first if the one using to compare Rotacion.
7 Φεβ 2012 · 77. 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: > t = { a = { b = { c = "Hello world!", 1 }, 2, d = { 3 } } }
2 Νοε 2017 · The length operator is denoted by the unary operator #. The length of a string is its number of bytes (that is, the usual meaning of string length when each character is one byte). The length of a table t is defined to be any integer index n such that t [n] is not nil and t [n+1] is nil; moreover, if t [1] is nil, n can be zero.
1 Οκτ 2015 · string.find() Returns the startIndex & endIndex of the substring found. The plain flag allows for the pattern to be ignored and intead be interpreted as a literal. Rather than (tiger) being interpreted as a pattern capture group matching for tiger, it instead looks for (tiger) within a string. Going the other way, if you want to pattern match ...
