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18 paź 2023 · Conceptually, error handling in Lua can be broken down into three key functions: error, pcall, and xpcall. Let’s dive into understanding these essential functions and demonstrate them through illustrative examples.
If you need to handle errors in Lua, you should use the pcall function (protected call) to encapsulate your code. Suppose you want to run a piece of Lua code and to catch any error raised while running that code.
Lua code can generate an error by calling the function error. Its optional parameter is a string, which is used as the error message.
In Lua programming, in order to avoid throwing these errors and handling errors, we need to use the functions pcall or xpcall. The pcall (f, arg1, ...) function calls the requested function in protected mode.
Two common error handlers are debug.debug, which gives you a Lua prompt so that you can inspect by yourself what was going on when the error happened (later we will see more about that, when we discuss the debug library); and debug.traceback, which builds an extended error message with a traceback. The latter is the function that the stand ...
Learn the fundamentals of error handling in Lua programming. Discover how to handle exceptions, use pcall, and create custom error messages for robust Lua applications.
In this article, we will discuss Lua error handling and discuss various techniques for handling errors in Lua. In programming, error handling allows you to catch and handle errors that may occur during program execution. Errors can be divided into two types: Syntax errors and run time errors.
