Lua goto continue. May 25, 2011 · In Lua 5.

• Lua goto continue 2, this can be imitated using goto: > for i = 1, 10 do >> if i>3 and i<6 then goto continue end >> print (i) >> ::continue:: In later versions of Lua, instead of continue you can use goto. 20年过去了，倔强的Lua即使在5. 0-beta-rc4, gotos allow transactional error handling code to be written something like this: -- 5. lua 1 yes continue i'm end 2 yes continue i'm end 3 no continue i'm end 在 GotoStatement 这个页面上，你能看到更 Lua 5. patch for luajit-2. Jul 4, 2021 · I’m a new scripter and my first language was Qbasic back in school. Roberto Ierusalimschy talks some in "The Novelties of Lua" (pdf link) about why goto (which can be used to implement continue) but not continue. 2 and upwards the best workaround is to use goto: if i % 2 == 0 then goto continue end. This is my code: this code reads the contents of a tooltip line by line, as if it were a text file Continue. This is a restrictive form of goto in that . 0-beta-rc2 function perform_transaction() if not f Garry's Mod adds a custom operator and aliases various native Lua operators. However, that changes control flow to be unstructured and requires more complex implementation and syntactic changes. i = 0 while i<10 do ::redo:: i = i+1 if i%2 == 1 then goto continue else print(i) goto redo end ::continue:: end Cannot jump into the scope of a local variable, for example: LUA_GCCOUNTB: returns the remainder of dividing the current amount of bytes of memory in use by Lua by 1024. Lua 一直不肯添加 continue 关键字。作者声称不添加不必要的特性。请问有谁认为「repeat until」结构比「continue」关键字更有必要？于是，凡是本来应当使用 continue 的地方，都不得不弄一个大大的 if 语句： In Lua 5. Garry's Mod Operator Note continue Consider using goto for repeat-until loops instead. 1. Lua 循环. I use lua as a plugin system in my applications, with PUC lua for debug builds and luajit for release. 0 beta 中出现的 goto 也可以用来替代 continue。 更多讨论详见[3]。 至于 repeat until 其实不算“非得支持”，算是顺手支持的吧，实现起来很简单[4]。 Continue Keyword: continue Github link. until true and break (works with Lua 5. . Let’s explore a simple yet powerful and important code where we will make use of the goto statement that will help us to replicate the work that a continue statement does. May 19, 2020 · I can’t find it in the developer wiki, or the devforum. May not convince you, but might be worth a look. LUA_GCSETPAUSE: sets data as the new value for the pause of the collector (see §2. May 25, 2011 · In Lua 5. So what you have is a situation where the code might be legal for a while, then someone tries to access the local later on after the label. In Lua 5. Lua 语言中的 goto 语句允许将控制流程无条件地转到被标记的语句处。 语法. Lua goto 语句. 2版本加入了goto语句，也仍然没有加入continue语句。 “非官方FAQ”对此的解释是： continue语句只是众多控制语句之一，类似的包括goto、带label的break等。而continue语句并没有什么特殊，没有必要新增这个语句； Oct 27, 2017 · 没有 continue. Code: print('Please continue your inputs p') Output: The above example we used coroutines concept for continue the user process until its goes to end. patch for lua5. A label is visible in the entire block where it is defined (including nested blocks, but not nested functions). Use patch or whatever the windows equivalent is with lua52. LUA_GCSTEP: performs an incremental step of garbage collection. 0-beta-rc2. 3 this could be optimized" I would be against such a thing. 今日学习Lua中，发现lua中是没有continue的，只有break、return 、goto 下面是runoob网站上面的说明： break 语句： 退出当前循环或语句，并开始脚本执行紧接着的语句。 goto 语句 ： 将程序的控制点转移到一个标签处。 Using 'continue' improves code readability by conveying the programmer's intent to skip to the next iteration based on a specified condition. Meaning the loop will skip to the end, and keep going from the top as if it fully completed what it was doing. 1, I'd like to know if there is a way to get what I need without using the goto operator. Label 的格式为：:: Label :: 以下实例在判断语句中使用 goto： Jul 19, 2021 · Yes, it is true that the work that a “continue” statement does can be done using a goto statement. Scope ends at the end of the block. k-String 文字列をソートする。 同じ文字でグルーピ… Jan 25, 2013 · @Steve: "i gather for lua 5. 0-beta-rc1 and refined in 5. 1（及以下版本）和 LuaJIT 中都不被支持，这是我认为真正的问题。 以下代码将需要有 continue 语句的代码块包装在一个 匿名函数中——我认为这种写法更易读而且你的原始循环代码几乎没有改变。 A goto statement was added in Lua 5. Feb 21, 2025 · Although Lua does not have a native continue statement, we can simulate it using goto or conditional blocks. i = 0 while i<10 do ::redo:: i = i+1 if i%2 == 1 then goto continue else print(i) goto redo end ::continue:: end 不能跳入一个本地变量的作用域, 例如 : Dec 6, 2011 · Lua 5. Apr 10, 2023 · We also use for loop for to iterate the values it will be continued further by using goto continue statement. May 25, 2011 · In Lua 5. 4 is because it feature matches luajit. So, in Qbasic you can use “GOTO” which basically takes you to the specified line of code. 4. Let’s dive into each of these control flow mechanisms in detail and explore additional use cases. The difference here is that continue will only skip the current iteration of the loop. Does this exist already or is there an alternative JL> that I've missed? If not then how to people not write ugly Jul 12, 2020 · 注：lua中没有continue语句 posted @ 2020-07-12 16:59 流星曳尾 阅读( 939 ) 评论( 0 ) 编辑 收藏 举报 刷新页面 返回顶部 Goto can also be used in Lua to simulate continue, redo usage. for i = 0, 10 do if i == 5 then continue end print (i) end. 1。） Apr 15, 2024 · 总的来说，Lua中循环结构的控制可以通过break语句、if语句模拟continue、goto语句等方式来实现。 但需要注意的是，在编写代码时应该尽量避免使用 goto 语句，因为会使代码变得难以理解和维护。 That "goto" statement jumps into an inner scope, so even the validity of the "goto" itself is questionable (and in my opinion it should be invalid too: "goto" is a bad statement here and I don't see any valid use of any "continue" statement or jump from inside any "repeat. This code will for i = 1, 10 do if i == 5 then goto continue-- Simula o 'continue', pulando para a próxima iteração do loop end print ("Current value:", i):: continue::-- Rótulo 'continue' end Current value: 1 Current value: 2 Current value: 3 Current value: 4 Current value: 6 Current value: 7 Current value: 8 Current value: 9 Current value: 10 Mar 29, 2016 · goto在Lua中还可用于模拟continue , redo这种用法. 0. 输出结果： $ luajit test. I hope they include an actual continue one day. I used this and if then else to code a quiz thingy in Qbasic. Lua requires that a local can be accessed any time it is in scope. 它支持goto语句，但在模拟continue时可能会引发错误。 在Lua中，没有内置的continue语句，但可以使用goto语句来模拟continue的功能。然而，使用goto语句可能会导致代码结构混乱，增加代码的复杂性和维护难度。 当使用goto语句模拟continue时，需要注意以下几点： 然而，在 Lua 中并没有提供 continue 这样的关键字来跳过当前循环的剩余部分并继续下一次循环。 为什么Lua没有continue语句？ 首先，Lua的设计哲学之一就是保持简洁和最小化核心语法。 To: Lua list Subject: Re: why no "continue" statement for loops? << File: continue. While it can provide an easy solution in certain scenarios, its use requires careful consideration to avoid chaotic code. tar. The continue statement is for loops only, just like break. gz >> JL> Every time I write a little program I end up wanting a continue JL> statement for loops. Example : GOTO 65 (takes you to line number 65 in your code and does whatever is in line 65) Can this be done in Roblox? Jun 17, 2024 · 文章浏览阅读106次。Lua语言中没有像其他编程语言中的"continue"关键字，但是可以通过一些技巧实现类似的效果。例如，在循环中使用条件语句来跳过某些特定的迭代，或者使用函数调用来实现类似于"continue"的功能 Sep 6, 2018 · i < 10;i++)那么lua中其实是没有continue的这个语法，但是lua里面是有goto continue可以执行到某行继续执行，相当于可以指定执行顺序以及执行的语句，在lua中除了这个方法还可以用while去模拟一下continue这个语句下面是这两种方式的具体实现方法。 9 - Lua完整语法 . 它支持goto语句，但在模拟continue时可能会引发错误。 在Lua中，没有内置的continue语句，但可以使用goto语句来模拟continue的功能。然而，使用goto语句可能会导致代码结构混乱，增加代码的复杂性和维护难度。 当使用goto语句模拟continue时，需要注意以下几点： goto在Lua中还可用于模拟continue , redo这种用法. Mar 8, 2011 · A goto statement was added in Lua 5. 5w次，点赞11次，收藏17次。本文介绍了在Lua中如何模拟`continue`语句。通过在循环内部定义另一个仅执行一次的循环，或者利用`goto`方法配合标签`::continue::`来跳过当前循环的剩余部分，同时保持`break`功能的正常使用。 Dec 24, 2020 · goto 语句在 Lua 5. When discussing control flow in programming, the `goto` statement often provokes mixed reactions. May 12, 2012 · 219A - A. 文章浏览阅读2. until" loop, where only a "break" or jump to outside is semantically valid). 4 and luajit210. 2. Posted by u/angry_pidgeon_123 - No votes and 3 comments Jun 26, 2021 · #lua #programmingThree simple tricks with which you can implement continue statement in LUA! :) Nov 3, 2023 · Lua语言中没有像其他编程语言中的"continue"关键字，但是可以通过一些技巧实现类似的效果。例如，在循环中使用条件语句来跳过某些特定的迭代，或者使用函数调用来实现类似于"continue"的功能。 Mar 29, 2023 · What does the goto keyword do? Lua goto 语句 Lua 循环 Lua 语言中的 goto 语句允许将控制流程无条件地转到被标记的语句处。 语法 语法格式如下所示： goto Label Label 的格式为： :: Label :: 以下实例在判断语句中使用 goto： 实例 1 [mycode4 type='lua'] local a = 1 ::label:: print('--- goto label ---&. Dec 7, 2022 · Since World of Warcraft runs Lua 5. 0-beta-rc2 . 因为Lua目前没有continue和redo的用法. 0 beta 中出现的 goto 也可以用来替代 continue。 更多讨论详见[3]。 至于 repeat until 其实不算“非得支持”，算是顺手支持的吧，实现起来很简单[4]。 May 25, 2011 · In Lua 5. This is a restrictive form of goto in that; A label is visible in the entire block where it is defined (including nested blocks, but not nested functions). 以下是用BNF扩展形式来展示的Lua完整语法。和常见的BNF扩展形式一样，{A} 意为0个或多个A、[A]意为一个可选的A。（关于运算符优先级，请参见3. 语法格式如下所示： goto Label. 0-beta3 The reason I targeted lua5. i = 0 while i<10 do ::redo:: i = i+1 if i%2 == 1 then goto continue else print(i) goto redo end ::continue:: end 不能跳入一个本地变量的作用域, 例如 : Jan 24, 2013 · 假设要使用goto跳过本地定义，则永远不会创建本地，因此任何试图在标签之后访问本地的人都将尝试使用无效的索引。 您说得对，在理论上，如果在标签之后从未使用过local，那么它不一定要阻止跳转，但在实践中，lua local会一直存在到其作用域的末尾，而不是 ### 用法：在循环中使用 ```lua local continue = false for i = 1, n do if <condition_to_skip> then goto continue end <loop_body> ::continue:: end ``` 示例代码： ```lua for i = 1, 5 do if i == 3 then goto continue end print(i) ::continue:: end ``` 输出结果： ``` 1 2 4 5 ``` 解释：程序执行到i=3时，满足条件i==3 -- Example of using goto in Lua local i = 0 ::start:: i = i + 1 print(i) if i < 5 then goto start end Introduction to Lua Goto. This can simplify complex loop logic, reduce indentation levels, and eliminate the need for additional boolean flags. 1+): for i=0, 9, 1 do repeat if i<5 then break end print(i) until true end Note that it makes break behave as continue, so you can't use it with its normal meaning. print(i) ::continue:: This is supported in LuaJIT since version 2. Because Lua currently has no usage of continue and redo. 8；关于名称、数字、以及字面量字符串的描述，请参见3. Copy while true do continue -- Make an infinite loop print () -- Never runs end 有了 goto，我们可以实现 continue 的功能： for i=1, 3 do if i <= 2 then print(i, "yes continue") goto continue end print(i, " no continue") ::continue:: print([[i'm end]]) end 输出结果为： 1 yes continue i'm end 2 yes continue i'm end 3 no continue i'm end 有了 goto，我们可以实现 continue 的功能： for i= 1, 3 do if i <= 2 then print (i, "yes continue") goto continue end print (i, " no continue") ::continue:: print ([[i'm end]]) end. Dec 24, 2020 · You can simulate continue (to a degree) using a combination of repeat . The goto replacement doesn't look very nice and needs more lines. 5) and returns the previous value of the pause. A goto may jump to any visible label as long as it does not enter into the scope of a local variable. Apr 11, 2018 · i < 10;i++)那么lua中其实是没有continue的这个语法，但是lua里面是有goto continue可以执行到某行继续执行，相当于可以指定执行顺序以及执行的语句，在lua中除了这个方法还可以用while去模拟一下continue这个语句下面是这两种方式的具体实现方法。 lua 没有 continue、多层 break、多层 continue、redo、局部错误处理，但 goto 可以充当这些角色。 比如 continue 就是 goto 循环末端的 label， redo 就是跳到循环的开始： Lua 循环 很多情况下我们需要做一些有规律性的重复操作，因此在程序中就需要重复执行某些语句。 一组被重复执行的语句称之为循环体，能否继续重复，决定循环的终止条件。. Feb 5, 2023 · While the Lua creators have implemented a goto statement in more recent versions of Lua it is not as convenient as a continue. isnp gktl vnr zik eniiv yjr dcismh fgxl picifn jkicxcob fkhj jyouqec tsrhwr ailj iyyjz