As you can see in Strings tutorial there is a special [===[ syntax for nesting square braces. You can use it in block comments too. Just note, that number of = signs must be the same in open and close sequence. For example 5 equals will work. –[=====[ for k,v in pairs(t) do local d … Read more
You’re right, this is one of the ways to do it. It would only not work and throw errors if your “String” variable is not a string. Personally, i usually prefer to use something like.. myString = string.lower(myString) But its really the same as doing myString = myString:lower() assuming that myString is actually a string, … Read more
the general case of iterating over an array and removing random items from the middle while continuing to iterate If you’re iterating front-to-back, when you remove element N, the next element in your iteration (N+1) gets shifted down into that position. If you increment your iteration variable (as ipairs does), you’ll skip that element. There … Read more
I experimented with both the # operator and table.getn(). I thought table.getn() would do what you wanted but as it turns out it’s returning the same value as #, namely 0. It appears that dictionaries insert nil placeholders as necessary. Looping over the keys and counting them seems like the only way to get the … Read more
Here a short comparison on pytorch and torch. Torch: A Tensor library like numpy, unlike numpy it has strong GPU support. Lua is a wrapper for Torch (Yes! you need to have a good understanding of Lua), and for that you will need LuaRocks package manager. PyTorch: No need for the LuaRocks package manager, no … Read more
the ~= is not equals It is the equivalent in other languages of !=
You could use math.floor(x) From the Lua Reference Manual: Returns the largest integer smaller than or equal to x.
Use os.exit() or just return from some “main” function if your script is embedded.
Try this: — http://lua-users.org/wiki/FileInputOutput — see if the file exists function file_exists(file) local f = io.open(file, “rb”) if f then f:close() end return f ~= nil end — get all lines from a file, returns an empty — list/table if the file does not exist function lines_from(file) if not file_exists(file) then return {} end local … Read more
You guessed right, table variables are passed by reference. Citing Lua 5.1 Reference Manual: There are eight basic types in Lua: nil, boolean, number, string, function, userdata, thread, and table. …. Tables, functions, threads, and (full) userdata values are objects: variables do not actually contain these values, only references to them. Assignment, parameter passing, and … Read more