LUA | programming language based upon the lua programming language
kandi X-RAY | LUA Summary
kandi X-RAY | LUA Summary
This is LUA 5.2, based on lua 5.2.2.
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Currently covering the most popular Java, JavaScript and Python libraries. See a Sample of LUA
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Trending Discussions on LUA
QUESTION
lets say you have a script like this
...ANSWER
Answered 2022-Apr-16 at 04:41You basically need to:
- Save the state of the program when the program ends
- Restore the state of the program when the program starts
There are several ways to store the state, the simplest way would be to create a file and store the state inside. One could also use the Windows Registry, a database, a remote server, etc.
A simple example:
QUESTION
I am changing the font of a figure caption in my R Markdown and am using bookdown
and pandoc to do so. My question is closely related to: How to change the figure caption format in bookdown?. I was able to get correct figure numbering and was able to alter the format of the "Figure 1" portion of the caption. However, I cannot figure out how to remove the colon in the output (i.e., "Figure 1:. ").
Minimal Example
Pandoc Function (taken from here)
...ANSWER
Answered 2021-Jul-24 at 09:34Looks like there was a change in rmarkdown
which adds a colon by default. Also the reason why the answer in the linked post does not work anymore. For more on this and a solution see https://community.rstudio.com/t/how-to-change-the-figure-table-caption-style-in-bookdown/110397.
Besides the solution offered there you could achieve your desired result by replacing the colon by a dot. Adapting the lua filter provided by https://stackoverflow.com/a/59301855/12993861 this could done like so:
QUESTION
I can't figure out how to get Lua to return ALL matches for a particular pattern match.
I have the following regex which works and is so basic:
...ANSWER
Answered 2022-Feb-17 at 00:25You can use string.gmatch(s, pattern)
/ s:gmatch(pattern)
:
This returns a pattern finding iterator. The iterator will search through the string passed looking for instances of the pattern you passed.
See the online Lua demo:
QUESTION
I have this enum
...ANSWER
Answered 2022-Feb-06 at 09:12In C++, the standard way to make an associative table is std::map
:
QUESTION
I have a geoserver on my webserver that uses log4j
v 1.2.17 (log4j-1.2.17.jar
).
I've downloaded the latest (safe?) version (2.15.0) from the log4j download site and checksummed the download.
I'm now confused as to which .jar
I should try and use?
The version on my website is called log4j-1.2.17.jar
, but the .jar
s in the download are all called something like e.g. log4j-web-2.15.0.jar
The geoserver's web server is jetty
if that makes any difference.
What to do?
...ANSWER
Answered 2021-Dec-13 at 13:16I've been looking into this myself for the same reasons and from I can gather you need to use log4j-1.2-api-2.15.0.jar based on the following read:
Perhaps the simplest way to convert to using Log4j 2 is to replace the log4j 1.x jar file with Log4j 2's log4j-1.2-api.jar.
I would like to point out that this shouldn't be the accepted answer but I wanted to give an answer for those who are trying to grasp the situation.
[Edit]
It would seem that log4j-1.2-api-2.15.0.jar is not enough. It helps with migrating Geoserver to the newer log4j version whilst still using the previous main package but it fails to reference to the newer version. As such I also added log4j-api-2.15.0.jar to the mix to complete the pathing.
After this it seems to work again and the version has been updated. I could validate this by using the api of Geoserver (/geoserver/rest/about/manifest.xml) specifically. If you search for log4j before upgrading you'll see 1.2.17 and afterwards 2.15.
QUESTION
I am trying to make a function to chain functions call. However it is not working. It should be able to print out the value after doing the sum without any issues.
Here is my first attempt:
...ANSWER
Answered 2021-Dec-12 at 23:11In your first attempt you are not adding new fields to the table chain so the method __newindex is never called, in your second attempt, I don't know what you did wrong because it worked to me, I did:
QUESTION
Hello I am making a roblox LUA script and I cant figure out how to make the script stop after a if sentence. Here my code.
...ANSWER
Answered 2021-Nov-17 at 01:00Depending on how you structure your code, you could simply return
.
QUESTION
I have data received from another script where the variable has the value "false" or "true". I want to convert this value to true or false in lua datatype. Currently, I can do this long way:
...ANSWER
Answered 2021-Oct-01 at 11:47No, because "false"
will also evaluate to true
, so if you want "false"
to evaluate to false
, you will have to convert it manually.
QUESTION
my code (partial) c++:
...ANSWER
Answered 2021-Oct-28 at 07:40When Lua calls your function it will check its return value to find out how many values it should fetch from the stack. In your case that's 1
. How else would Lua know how many of the pushed values you want to return?
From Lua 5.4 Reference Manual 4.6 Functions and Types:
In order to communicate properly with Lua, a C function must use the following protocol, which defines the way parameters and results are passed: a C function receives its arguments from Lua in its stack in direct order (the first argument is pushed first). So, when the function starts, lua_gettop(L) returns the number of arguments received by the function. The first argument (if any) is at index 1 and its last argument is at index lua_gettop(L). To return values to Lua, a C function just pushes them onto the stack, in direct order (the first result is pushed first), and returns in C the number of results. Any other value in the stack below the results will be properly discarded by Lua. Like a Lua function, a C function called by Lua can also return many results.
As an example, the following function receives a variable number of numeric arguments and returns their average and their sum:
QUESTION
I want to search for all function calls in a Lua file using python. for example, I have this Lua code:
...ANSWER
Answered 2021-Oct-11 at 23:54You can use luaparser
(pip install luaparser
) with recursion to traverse the ast
:
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