Lua one line if This is one of the biggest issues people who aren’t used to Lua have when reading Lua code. if (dummy) then print("dummy is true") end is equal too An if statement tests its condition and executes its then-part or its else-part accordingly. Each piece of code that Lua executes, such as a file or a single line in interactive mode, is a chunk. Like this: Jul 22, 2014 · @lhf: I need a one-liner because the code is to appear in an article. Consider the example shown below, which depicts a simple if else condition in lua. Now, I wanted to learn more about how the computer thinks (computer science 1. Jun 10, 2018 · The answer why this approach is better is that there is a 0% chance any of your Lua code will already be using the [=[style of brackets for a text string. Jul 21, 2022 · What if I told you, there’s a way to replace all that if statement, with a single line? That’s where Ternary expressions come in handy. What solutions have you tried so far? Did you look for solutions on the Developer Hub? I have tried doing if I am brand new to learning how to use Lua and I am playing around with Love2D. Logical operators are fundamental tools that enable you to perform boolean operations, facilitating decision-making and control flow within your programs. Example. local _, replacements = string. Lua 教程 Lua 环境安装 Lua 基本语法 Lua 数据类型 Lua 变量 Lua 循环 Lua 流程控制 Lua 函数 Lua 运算符 Lua 字符串 Lua 数组 Lua 迭代器 Lua table(表) Lua 模块与包 Lua 元表(Metatable) Lua 协同程序(coroutine) Lua 文件 I/O Lua 错误处理 Lua 调试(Debug) Lua 垃圾回收 Lua 面向对象 Lua 数据库 Feb 20, 2019 · Lua doesn’t have true ternary operator but there is a way to mimic the behavior. if a<b then return a else return b end. When I started, I learned to script from tutorials, examining others’ scripts, and just simply practice. Lua isn't really whitespace sensitive, so you can also just write your whole if statement on one line, and it'll work. XML Sep 18, 2019 · What are If Statements? If Statements are conditional statements that will proceed to run code only if the CONDITION is true. If x == y then foo = 1 else foo = 2 end. This is very likely if you found the code on WSL Apr 22, 2019 · You can use string. So if code depends on wether h has been defined you put it in a condition like that. . a = 3 b = 4 if a == b then print("blah") else print("nah nah") end Output nah nah Jan 31, 2016 · Hey Friends I was thinking if we can make our whole lua code in one line i mean i saw people use 3000+ lines in Lua script : Cheat table and it takes times to load if we use only one line instead of 3000+ ,it will be loaded fast and without hanging May 17, 2020 · <details><summary>EDIT</summary>I have rewritten the entire post to educate better on conditional statements in specifics. end. Apr 3, 2011 · You could just write the if statement in one line, it is no shorthand, inline or ternary operator stuff tho. 1 – Chunks. However, the pseudo ternary is often used and trips up people. Jan 24, 2021 · Is there a shorted "if / then" syntax available in Lua (I'm using Corona SDK specifically), like in some other languages In particular along the lines of: res = (a == b) ? "It worked" : "It did NOT work" Jul 21, 2022 · What if I told you, there’s a way to replace all that if statement, with a single line? That’s where Ternary expressions come in handy. showpage() line = 0. or: Returns true if at least one condition is true. Assuming a blocky and easy to understand style is used. not: Reverses the truth value of a condition. So let’s look at it in some I tend to align the operators at the start of new lines so I remember how I'm combining terms (both for long logic and long arithmetic). if ("100000" &gt;= my_variable &lt;= "80000") Jul 20, 2021 · Let’s first understand what a ternary operator is and why we need one. The CONDITION is just a fancy term for whatever the if statement is checking to be either true or false. and: Returns true if both conditions are true. How does one implement ternary operations? As of 2022, there are 2 methods of implementing ternary-like operations. if line > MAXLINES then. gsub, but you'll need to provide a function that will count the lines, for example: A Lua elseif statement allows for additional boolean expressions to be evaluated in an if-based control structure. More specifically, a chunk is simply a sequence of statements. I have a statement that produces a very long string on the screen and I was wondering if there is anyway to write this code over multiple lines so my code will stay neat and I don't have to scroll multiple times to get to the end of the statement. Feb 26, 2021 · Lua isn't really whitespace sensitive, so you can also just write your whole if statement on one line, and it'll work. gsub, as it returns the number of performed substitutions as the second result:. Dec 25, 2021 · In Lua all values that are not nil or false are considered to be logically true. Since I need to "waste" 5 extra lines on this task (there are also 2 empty lines around), or 9 lines with catwell's solution, it means that I'll have to split my code into two functions and my code will no longer be succinct :-( The one-page guide to Lua: usage, examples, links, snippets, and more. Aside from a ternary statement such as `foo = x == y and 1 or 2` you could also use branchless programming techniques. There is no limit to how many elseif statements are in a control structure, but elseif statements must be after the if statement and before a possible else statement. BUT the Lua code snippet you might want to copy/paste inline could potentially have the regular [[double square brackets in use already. gsub(text, "\n", "\n") Update (4/22/19): If you need to add a line number to each line (the original question was about line counting), then you can still use string. if h then end is usually used to check wether h is not nil. a = 3 b = 4 if a == b then print("blah") else print("nah nah") end Output nah nah Apr 3, 2011 · You could just write the if statement in one line, it is no shorthand, inline or ternary operator stuff tho. What should the condition be? Apr 3, 2011 · You could just write the if statement in one line, it is no shorthand, inline or ternary operator stuff tho. a = 3 b = 4 if a == b then print("blah") else print("nah nah") end Output nah nah Apr 1, 2025 · Logical Operators in Lua. The else-part is optional. Sep 7, 2022 · What do you want to achieve? Keep it simple and clear! I want an if statement that can check for multiple conditions without typing if variable == 1 or variable == 3 What is the issue? Include screenshots / videos if possible! I want to know if such a system is even possible to do. When you write nested if s, you can use elseif. I didn’t know anything more than just making code like a language given to the computer. For the most part Lua is simple and straight forward to understand. Jul 20, 2021 · Let’s first understand what a ternary operator is and why we need one. Live Demo. Jan 24, 2012 · How can I set a lower and upper bound value for a variable in a if-statement in lua programming language? I need something like the pseudocode below. if a<0 then a = 0 end. ljvmemgr oanyumulv otkalz jrc yjuv ceuxi dtycwy kevheg dyzz zacdip niyos vxjtlshrf fcyf giranpop rxhfql