kandi X-RAY | Perl Summary
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QUESTION
I want to have my reference counted C++ object also managed in Lua callbacks: when it is held by a Lua variable, increase its refcount; and when the Lua variable is destroyed, release one refcount. It seems the releasing side can be automatically performed by __gc
meta-method, but how to implement the increasing side?
Is it proper&enough to just increase refcount every time before adding the object to Lua stack?
Or maybe I should new a smart pointer object, use it everywhere in Lua C function, then delete it in __gc
meta-method? This seems ugly as if something wrong with the Lua execution and the __gc
is not called, the newed smart pointer object will be leaked, and the refcounted object it is referring would have leak one count.
In Perl that I'm more familiar with, this can be achieved by increase refcount at OUTPUT
section of XS Map, and decrease refcount at destroyer.
ANSWER
Answered 2021-Jun-10 at 19:23I assume you have implemented two Lua functions in C: inc_ref_count(obj)
and dec_ref_count(obj)
QUESTION
How to remove VIM (completely) and change my mac command line editor to sublime?
I've spent the last three hours reading the same links on "how to remove VIM" only to get "how to remove MacVIM and reinstall it fresh" Or "How to remove Vim so I can reinstall it on Ubuntu"
My old laptop was fortunate to have a friend remove it but my new machine still has it installed.
I wish VIM would die in "words redacted to excessive profanity" dumpster fire while a hobo "words redacted to excessive profanity" to put out the fire
I've lost way too many hours trying to learn that outdated neckbeard elvish piece of UX trash so I want it gone. No, I'm not touching emacs.
Please tell me there is a way I can switch to sublime or am I permanently cursed to have this confusing black screen of death pop up when I try to git push or git tag stuff?
My original goal was to tag a git and push it but vim comes up and I can't figure out how to speak elvish.
I've been using PyCharm for a few years and love the interface but I need to dig deeper and a TDD Django book for class uses the terminal, it wants me to git -a "comments" so I need your advice.
So now I can't learn TDD Django because vim, MacVim and eMacs users flood the internet but I can't remove it nor figure out how to work it.
I've tried brew uninstall macvim
which doesn't work because I have vim not macvim
I also tried sudo uninstall vim
no luck as this is zsh mac not ubuntu
I tried brew uninstall vim
to get No available formula or cask with the name "vim"
I've searched SO five times and keep getting the same links.
Alternates I've tried
brew uninstall ruby vim
per this post https://superuser.com/questions/1096438/brew-upgrade-broke-vim-on-os-x-dyld-library-not-loaded I tried, no luck.
...ANSWER
Answered 2021-Jun-14 at 21:41You don't have to remove Vim from your machine. Instead, tell your system and your tools to use Sublime Text as default editor. After you have followed that tutorial, which I must point out is part of Sublime Text's documentation, you should have a system-wide subl
command that you can use instead of vim
. For that, you need to add those lines to your shell configuration file:
QUESTION
This is my first time attempting to extract a string using gsub and regular expressions in R. I would like to extract three words after the first occurrence of the word "at" or "around" in each cell of a text column (col in example) and place the extraction into a new column (new_extract).
What I have thus far is the following:
...ANSWER
Answered 2021-Jun-14 at 19:00Your regex attempts to match words only after the last at
. Also, since there is no pattern to match the gap between at
or around
(you are not trying to match around
at all by the way), your pattern will not extract any words in the end.
I suggest this approach with sub
:
QUESTION
On Mac OS X 10.7.5 on which perl-5.12.3
is installed, I needed to use the utf8::all
module so I have manually installed utf8-all-0.024 (Note the minimum perl version of v5.10.0
on its CPAN page) The make test
has failed but I've still installed it to see if it would work. It didn't work so I've decided to uninstall it. I've tried 2 methods given at perl.com the first method didn't work as it required perl-5.14.2
The second method gave this message:
ANSWER
Answered 2021-Jun-14 at 18:28You've made a mess of things by incorrectly installing the module. Specifically, you didn't install the dependencies.
Ideally, you should use the package manager that provided perl
itself. But they don't provide every module. So you'd use the non-package manager approach:
QUESTION
I'm trying to develop a perl script that looks through all of the user's directories for a particular file name without the user having to specify the entire pathname to the file.
For example, let's say the file of interest was data.list
. It's located in /home/path/directory/project/userabc/data.list
. At the command line, normally the user would have to specify the pathname to the file like in order to access it, like so:
cd /home/path/directory/project/userabc/data.list
Instead, I want the user just to have to enter script.pl ABC
in the command line, then the Perl script will automatically run and retrieve the information in the data.list.
which in my case, is count the number of lines and upload it using curl. the rest is done, just the part where it can automatically locate the file
ANSWER
Answered 2021-Jun-14 at 09:41Even though very feasible in Perl, this looks more appropriate in Bash:
QUESTION
in shell script, when i want to run a curl command to upload, i just do this :
...ANSWER
Answered 2021-Jun-14 at 02:22i saw someone saying (Using https://corion.net/curl2lwp.psgi ) can generate the codes, but im not sure if thi is the correct way
QUESTION
This test program
...ANSWER
Answered 2021-Jun-13 at 22:59It seems like you can use update() instead of finishobjects()
:
QUESTION
I'm compiling HTTPD 2.4.48 along with Lua, Zlib, cURL, jansson and OpenSSL.
Here is the list of files and software I use:
- httpd-2.4.48
- apr-1.7.0
- apr-util-1.6.1
- cURL 7.77.0
- expat-2.4.1
- jansson 2.13.1
- Lua 5.4.3
- mod_fcgid 2.3.9
- openssl-1.1.1k
- pcre-8.44
- ZLIB 1.2.11
- ActivePerl v5.28.1.2801 (x64)
- CMake v3.20.3 (x64)
- NASM v2.15.05 (x64)
- Gawk v3.1.6-1 (x86)
The whole compile statement I use:
Visual Studio 2015: call "C:\Program Files (x86)\Microsoft Visual Studio 14.0\VC\vcvarsall.bat" amd64
...ANSWER
Answered 2021-Jun-13 at 19:58Whenever you fix issues, start by the first one (cause solving that may remove the remaining), which in you case seems to be:
QUESTION
I've written a Pi Hardware Interface Server (phis) that uses http protocol to control the hardware connected to my Raspberry Pi (relays, analog measurements, etc). It processes simple requests and responds with plain text. It has been working flawlessly for years and I have written extensive browser-based interfaces to the system. Here's the basic structure:
...ANSWER
Answered 2021-Jun-13 at 18:07Found the answer in this post ("Duh" moment the instant I saw it!)
I had forgotten to close the connected and listening sockets in the forked child, which were inherited by the spawned daemon and stayed open as long as it runs. Here's the code I'm using to spawn a process that will be left running (daemonized):
QUESTION
In Perl or Javascript, it's a one-liner:
my($net, $bits) = split('/', $data, 2);
or
let [net, bits] = data.split('/');
Is there a one-liner in Python? As far as I can tell, it takes several lines. For example:
...ANSWER
Answered 2021-Jun-13 at 18:02You could use list
unpacking when /
is in the IP address:
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