This tutorial covers various topics ranging from the basics of Lua to its scope in learn Lua. It has topics suitable for both beginners as well as advanced users. Several independent benchmarks show. Lua as the most efficient in the realm of dynamically-typed interpreted languages. • Efficient in real code, too. A PDF version is available. (info) The purpose of this book is to teach Lua programming to anyone regardless of previous.

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Jung, Kurt, Beginning Lua programming / Kurt Jung and Aaron Brown. p. cm. Beginners to Lua often wish that variables would be local by default, but. code is included as an attachment ( in this PDF file. .. languages, it is by tradition often used to illustrate to beginners the most. Programming in Lua / Roberto Ierusalimschy. – 2nd ed. – Rio de A common mistake for beginners is to confuse a.x with a[x]. The first form.

A table is a collection of key and data pairs, where the data is referenced by key; in other words, it is a hashed heterogeneous associative array.

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A key index can be any value except nil and NaN , including functions. A table is often used as structure or record by using strings as keys. Because such use is very common, Lua features a special syntax for accessing such fields.

The easier-to-read -- dot notation is just syntactic sugar. By using a table to store related functions, it can act as a namespace. The first automatic index is 1 rather than 0 as it is for many other programming languages though an explicit index of 0 is allowed.

A numeric key 1 is distinct from a string key "1". Automatic indexing in Lua starts at 1.

Lua-Users Tutorial

For a regular array, with non-nil values from 1 to a given n, its length is exactly that n, the index of its last value.

If the array has "holes" that is, nil values between other non-nil values , then t can be any of the indices that directly precedes a nil value that is, it may consider any such nil value as the end of the array. The following example demonstrates an "infinite" table. For any n, fibs[n] will give the n-th Fibonacci number using dynamic programming and memoization.

By placing functions and related data into a table, an object is formed. Inheritance both single and multiple can be implemented using the metatable mechanism, telling the object to look up nonexistent methods and fields in parent object s. There is no such concept as "class" with these techniques; rather, prototypes are used, similar to Self or JavaScript.

New objects are created either with a factory method that constructs new objects from scratch or by cloning an existing object. Lua provides some syntactic sugar to facilitate object orientation. To declare member functions inside a prototype table, one can use function table:func args , which is equivalent to function table.

Calling class methods also makes use of the colon: object:func args is equivalent to object. The compilation process is typically invisible to the user and is performed during run-time , but it can be done offline in order to increase loading performance or reduce the memory footprint of the host environment by leaving out the compiler.

Lua version 5. The list consists of a list of the 5 best books that will be trained Lua online.

Its goal is for absolute students who may not be accustomed to scripting languages. Programming in Lua The first adjustment in programming using Lua Robert Ierusalimschya should be without spending a penny an online.

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Ierusalimschy the executive architect Lue. The pamphlet is one written with Lua 5. Zero in mind which is now the same as it now requires 5.

Gems of Lua programming Lua programming gemstones arranged on L. De Figueiredo, W.

Celes, and R. Ierusalimschy introduces more developed Lua principles.

Components are available at no cost online. The entire eBook can also be downloadd in print and in various digital formats.

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It is assumed that the developers already experienced Lua.You can download the second edition here. I am learning using Ignatz ' ebook, and by studying the example projects and tweaking them. Downloaded the lot.

But what do people think? April Posts: 2, This raises an interesting point. The following is common at the end of each update : -- Reset velocity self.

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See my other posts. I have always been a very creative person and find it relaxing to indulge in cuju. I do love reading books delightfully.