Some examples of what this means: When dealing with lua it is important to differentiate between the boolean values true and false and values that evaluate to true or false.. Example Booleans and other values. Source: www.lua.org. It is popular in the video game industry as a language that can be embedded in a larger game engine. placing and "elseif" in the "statement" will split the statement in to however many elseif, else and if's there are in the statement. The fourth edition targets Lua 5.3 as well as is available at Amazon. whatever by Attractive Anaconda on May 23 2020 Donate . if a < amin then x = amin else if a > amax then x = amax else x = a end end. 0. Lua is a programming language designed primarily for embedded systems. Terwyl hy nog grootliks relevant vir latere weergawes, daar is 'n paar verskille. 如果布爾表達式的值爲true,那麼if代碼塊將被執行,否則else代碼塊將被執行。 Lua程序設計語言假定布爾true和非零值的任意組合作爲true,以及它是否是布爾假或零,則假定爲false值。 You should use false, or nil in place of 0: > if false then print ("true") else print ("false") end false > if nil then print ("true") else print ("false") end false. If, Elseif, and Else are used to give different outcomes based on different condition.--If this is TRUE: do this- Else/if this is TRUE: do this instead- or Else if none are TRUE: do this other thing instead.--Super easy. This is analogous to how the following Lua if-then-else statements are equivalent: if a < amin then x = amin elseif a > amax then x = amax else x = a end. Even though Lua lacks ternary operators explicitly, there are ways to closely approximate it, as described below. The fourth edition targets Lua 5.3 as well as is uncommitted at Amazon. lua if else . We can add something else, and it will close if it isnt already after fifteen seconds. The fourth edition targets Lua 5.3 and is available at Amazon and other bookstores. Die vierde uitgawe is gerig op Lua 5,3 en is beskikbaar by Amazon en ander boekwinkels. lua by Ttiki on Aug 21 2020 Donate . lua中的判读语句 三个关键字 if, else, elseif, end 判读语句的三种格式: 一、、 if 表达式 then 语句块 end 二、 if 表达式 then 语句块1 else 语句块2 end 三、只能有一个if和else if 表达式1 then 语句块1 elseif 表达式2 then 语句块2 elseif 表达式3 then 语句块3 。 【Lua进阶系列】之代码优化,别再依赖if..else了 Lua tiene pocas instrucciones, pero estas instrucciones, junto con otras instrucciones y con expresiones complejas, dan una cantidad buena de control y flexibilidad para … It sure would be swell, and we can accomplish this concept in Lua using these things called 'if' statements . python by Doubtful Dingo on May 09 2020 Donate There cannot be an elseif block after the else … if a 0 then a = 0 -- если a меньше 0, присвоить a значение 0 end Вместо вложенных операторов if можно использовать конструкцию elseif . Секция else является необязательной. Statements: 4.3.2 – while. “lua if else” Code Answer . 조건문은 if문이 있으며 반복문으로 while, repeat와 for문이 있다. Here is an example of a door: This tells the door to open if it is closed, and close if it is opened. Lua: If and Else Wouldn't it be useful if we could take information from io.read , and then check what the user has written, doing certain things depending on what they'd written? Do you want to create scenes in Lua but you don’t know how? If statements are always "if this has happened, then do that" kind of scripts. Programming in Lua: Part I. “while if elif else python” Code Answer . By buying the book, you also assistance to assist the Lua project. In Lua, the only conditional statement uses the if instruction. Deur die aankoop van die boek, ook help om die Lua projek te ondersteun. Need help? 4.3.1 – if then else lua if else . Else and Elseif A basic if statement takes action only if something is true. moreover to other bookstores. 4. By buying the book, you also help to support the Lua project. Lua did not support boolean types (i.e. Looking for something else? a * 2 + 3 < a + 3 * 4 or a < 25 and a < a * 5 - 4: Original expression (a * 2) + 3 < a + (3 * 4) or a < 25 and a < (a * 5) - 4 * is highest precedence, tightest binding in the … Assume variable A holds true and variable B holds false then − 如果布尔表达式的值为true,那么if代码块将被执行,否则else代码块将被执行。 Lua程序设计语言假定布尔true和非零值的任意组合作为true,以及它是否是布尔假或零,则假定为false值。 "If" tells the code to do something if a condition is true or not. False and nil are both considered as false, while everything else is considered as true. ฉบับพิมพ์ครั้งแรกนี้ถูกเขียนขึ้นสำหรับ Lua 5.0 ในขณะที่ยังมีความเกี่ยวข้องส่วนใหญ่สำหรับรุ่นต่อมามีความแตกต่างบางอย่าง and other bookstores. Remember to change deviceID in the code! But what if you want to take different actions depending on its truth? php自学网 zixuephp.net 粤ICP备15053514号 关于 0.183s 本站内容只用于学习和交流,如有牵扯版权问题请联系站长邮箱:619341326@qq.com 粤ICP备15053514号 关于 0.183s 本站内容只用于学习和交流,如有牵扯版权问题请联系站长邮箱:619341326@qq.com The reason for this is historical. In Lua, > if 0 then >> print ("true") >> else >> print ("false") >> end true prints "true"! It is also possible to execute a sure piece of code only if the expression was not true by using the else keyword and to house conditional statements with the elseif keyword: d = 0 c = d -- or c = 0 b = c -- or b = 0 a = b -- or a = 0 Note that the else block must always be the last one. The Else statement. 4.3.1 – if then else if-else 是我们熟知的一种控制结构。Lua 跟其他语言一样,提供了 if-else 的控制结构。因为是大家熟悉的语法,本节只简单介绍一下它的使用方法。 单个 if 分支 型 x = 10 if x > 0 then print ("x is a positive number") end. lua documentation: The boolean type. Lua의 조건문 반복문 ospace114 @ naver.컴(작성일: 080121) Lua에서 조건문과 반복문 종류는 총 4가지로 단순하다. 가장 많이 사용하는 명.. The following are the major language features of Lua as implemented and extended by PICO-8. Pretty simple, right? --lua if color(403, 234) == 4727808 then -- если в координатах 403, 234 цвет 4727808 log (1) -- вывести в лог 1 else -- иначе log(0) -- вывести 0 end 运行输出:x is a positive number. 控制结构 if-else. By buying the book, you also assistance to support the Lua project. In Lua, if, elseif and else use then and end clauses to delimit the conditional code]] j = 45-- == for equality testing if j==45 then print ("yes") end It is common that you may want to run some code on the failure of the condition. Why? They return a bool, which is true or false. Die eerste uitgawe is vir Lua 5,0 geskrewe. -- if/elseif/else structure if condition then Do this elseif condition then Do this else Do this instead end If this condition is True: then do this. placing an "else" in the "statement" will split the statement in two, but only by two, with else there is only two possible solutions, so two "sub-statements", if you want it call it that. There are only two values in lua that evaluate to false: nil and false, while everything else, including the numerical 0 evaluate to true. Check FIBARO Forum for more! python if elif . Unlike C, the combination of Lua precedence rules plus Lua language rules make it likely that you can do what you want without parentheses, but they're always available in case you need them. If the expression is not true, they just skip over that piece of code and the program continues. And it will close if it isnt already after fifteen seconds find some examples you... 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