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 But what if you want to take different actions depending on its truth? The fourth edition targets Lua 5.3 as well as is uncommitted at Amazon. 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. and other bookstores. “lua if else” Code Answer . Programming in Lua: Part I. 루아(lua)의 중첩된 조건문을 위한 elseif와 else 명령 (0) 2016.01.27: 루아(lua)의 논리연산자 and,or,not (0) 2016.01.27: 루아(Lua)의 조건분기문 if ~ then ~ end (0) 2016.01.27: 루아(Lua)의 nil (0) 2016.01.26: 루아(Lua)의 문자열 (0) 2016.01.26: 루아(Lua)의 부울형과 조건연산자 (1) 2016.01.26 가장 많이 사용하는 명.. There are only two values in lua that evaluate to false: nil and false, while everything else, including the numerical 0 evaluate to true. moreover to other bookstores. 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? False and nil are both considered as false, while everything else is considered as true. The Language Chapter 4. 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. 0. 조건문은 if문이 있으며 반복문으로 while, repeat와 for문이 있다. This statement is a very basic, direct order to lua. When dealing with lua it is important to differentiate between the boolean values true and false and values that evaluate to true or false.. 4.3.1 – if then else Else and Elseif A basic if statement takes action only if something is true. 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. 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. Lua의 조건문 반복문 ospace114 @ naver.컴(작성일: 080121) Lua에서 조건문과 반복문 종류는 총 4가지로 단순하다. lua if else . Example Booleans and other values. If the expression is not true, they just skip over that piece of code and the program continues. "If" tells the code to do something if a condition is true or not. The following are the major language features of Lua as implemented and extended by PICO-8. 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 … 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 python by Doubtful Dingo on May 09 2020 Donate Do you want to create scenes in Lua but you don’t know how? 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. Die vierde uitgawe is gerig op Lua 5,3 en is beskikbaar by Amazon en ander boekwinkels. There cannot be an elseif block after the else … 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 ฉบับพิมพ์ครั้งแรกนี้ถูกเขียนขึ้นสำหรับ Lua 5.0 ในขณะที่ยังมีความเกี่ยวข้องส่วนใหญ่สำหรับรุ่นต่อมามีความแตกต่างบางอย่าง Some examples of what this means: 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. Statements: 4.3.2 – while. Terwyl hy nog grootliks relevant vir latere weergawes, daar is 'n paar verskille. 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. We can add something else, and it will close if it isnt already after fifteen seconds. In Lua, the only conditional statement uses the if instruction. The fourth edition targets Lua 5.3 as well as is available at Amazon. Lua - Logical Operators - Following table shows all the logical operators supported by Lua language. Check FIBARO Forum for more! --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 It is common that you may want to run some code on the failure of the condition. Why? 运行输出:x is a positive number. By buying the book, you also help to support the Lua project. Deur die aankoop van die boek, ook help om die Lua projek te ondersteun. It is popular in the video game industry as a language that can be embedded in a larger game engine. Else Statements. In this article you can find some examples that you can use. By buying the book, you also assistance to support the Lua project. “while if elif else python” Code Answer . lua by Ttiki on Aug 21 2020 Donate . It sure would be swell, and we can accomplish this concept in Lua using these things called 'if' statements . placing and "elseif" in the "statement" will split the statement in to however many elseif, else and if's there are in the statement. In Lua, > if 0 then >> print ("true") >> else >> print ("false") >> end true prints "true"! Assume variable A holds true and variable B holds false then − python if elif . The first thing I want to teach you is the "if" statement. 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。 Source: www.lua.org. if a 0 then a = 0 -- если a меньше 0, присвоить a значение 0 end Вместо вложенных операторов if можно использовать конструкцию elseif . 0. if a < amin then x = amin else if a > amax then x = amax else x = a end end. Looking for something else? By buying the book, you also assistance to assist the Lua project. They return a bool, which is true or false. The Else statement. 4. whatever by Attractive Anaconda on May 23 2020 Donate . 控制结构 if-else. lua if else . Need help? Here is an example of a door: This tells the door to open if it is closed, and close if it is opened. Lua tiene pocas instrucciones, pero estas instrucciones, junto con otras instrucciones y con expresiones complejas, dan una cantidad buena de control y flexibilidad para … lua documentation: The boolean type. Remember to change deviceID in the code! If statements are always "if this has happened, then do that" kind of scripts. The reason for this is historical. Lua is a programming language designed primarily for embedded systems. The fourth edition targets Lua 5.3 and is available at Amazon and other bookstores. examples: 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。 Секция else является необязательной. 4.3.1 – if then else This can be really useful in creating your own scripts. 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