argon | An open-standards augmented reality platform for the web | Augmented Reality library
kandi X-RAY | argon Summary
kandi X-RAY | argon Summary
An open-standards augmented reality platform for the web. Initially created to supporting creating AR web applications for the Argon4 browser, argon.js is now aimed at supporting AR in any web browser, using whatever capabilities are available on each platform. If you would like to help improve Argon4 and argon.js, you can see our current and future Roadmap.
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QUESTION
#include
#include
#include
#include
#include
int funcone(){
int i;
char *arr[5] = {"One", "Two", "Three", "Four", "Five"};
for(i = 0; i <= 5; i++){
printf("%s\t%d\n", arr[i], i);
}
printf("\n~");
return 1;
}
#define NCHAR 1024
#define DELIMIT "\t\n"
int functwo(){
//prints only numbers from input received from funcone
int c;
int position = 0, nchar = NCHAR, i;
char *arr = malloc(sizeof *arr * nchar);
if (!arr)
{
fprintf(stderr, "Memory Exhausted.");
}
//reads input from stdin stream, supposedly piped from func1
while ((c = fgetc(stdin)) != 126)
{
arr[position++] = c;
if (position >= nchar) // reallocate space if needed
{
nchar += NCHAR;
arr = realloc(arr, nchar + NCHAR);
if (!arr)
{
fprintf(stderr, "Memory Exhausted.\n");
break;
}
}
}
arr[position] = 0;
char *token;
//splits string by \t\n, and converts string into numbers
token = strtok(arr, DELIMIT);
while (token != NULL)
{
char *endptr;
int x = strtol(token, &endptr, 10);
if (x > 0)
{
printf("%d\n", x);
}
token = strtok(NULL, DELIMIT);
}
printf("\n~");
free(arr);
return 1;
}
int main(){
printf("piping begins\n");
int fd[2];
int childstatus = 0;
if (pipe(fd) == -1)
{
perror("Pipe1 error");
return 1;
}
int pid1 = fork();
if (pid1 < 0)
{
perror("Pid1 error");
return 1;
}
if (pid1 == 0)
{
//child 1 process
dup2(fd[1], STDOUT_FILENO);
close(fd[1]);
close(fd[0]);
int f1 = funcone();
// int f1 = (*builtin_functions[aone])(argone);
/*In the main program, this line runs a function
*with a corresponding index number, and takes in the
*command keywords as arguments. Returns 1 to continue Shell loop, 0 to exit.*/
}
int pid2 = fork();
if (pid2 < 0)
{
perror("Pid2 error");
return 1;
}
if (pid2 == 0)
{
// child 2 process
dup2(fd[0], STDIN_FILENO);
dup2(fd[1], STDOUT_FILENO);
close(fd[0]);
close(fd[1]);
int f2 = functwo();
// int f1 = (*builtin_functions[aone])(argone);
}
// parent process
waitpid(pid1, &childstatus, WNOHANG);
waitpid(pid2, &childstatus, WNOHANG);
dup2(fd[0], STDIN_FILENO);
close(fd[0]);
close(fd[1]);
int f3 = functwo();
//supposed to be functhree, but something similar to functwo so i reused it.
// int f3 = (*builtin_functions[aone])(argone);
printf("Piping process complete.\n");
}
...ANSWER
Answered 2022-Mar-22 at 13:53Your first child process is writing to the pipe. Your parent process and second child process are both reading from that same pipe. Each byte written to the pipe will be consumed by one of those latter two processes, but you have no direct control over which one. This is not inherently wrong, but it is rarely what you want, and it will not work reliably for you in the example program.
What likely is happening is that the parent process consumes the data written by the first process, or at least the end-of-message character, which you intend for the second child instead. The second child then waits forever to read data that will never arrive. It does not even detect end-of-file on the pipe when the first child terminates, because the second child itself holds the write end of the pipe open. The parent, in turn, waits forever for the second child to terminate.
Supposing that the intention is for the second child to consume all the data written by the first child, and for the parent to in turn consume all the data written by the second child, you should create a separate pipe for the child2 --> parent link. That's usually the pattern you want: a separate pipe for each distinct ordered pair of endpoints. That includes a separate pipe for each direction if you want bidirectional communication between the same two processes.
Update:Additionally, funcone()
overruns the bounds of its local arr
array. The valid indices are 0 through 4, but the for
loop in that function runs from 0 through 5.
QUESTION
After installing nvm, it has been working normally until I need to use nvm to remotely connect to the server with python. There is no error or success in switching the node version, so I wrote a script on the server for testing:
test.py:
...ANSWER
Answered 2022-Mar-18 at 08:53The error is pretty clear: the system cannot find the nvm
command. This is probably because the search path in the subprocess is different the the one in your shell.
The documentation gives the following recommendation about this:
Warning: For maximum reliability, use a fully-qualified path for the executable. To search for an unqualified name on
PATH
, useshutil.which()
. On all platforms, passingsys.executable
is the recommended way to launch the current Python interpreter again, and use the-m
command-line format to launch an installed module.Resolving the path of executable (or the first item of args) is platform dependent. (...)
You could also just change the command to include the full path. So something like:
QUESTION
I'm trying to arrange a pandas dataframe that looks like this:
...ANSWER
Answered 2022-Feb-24 at 19:44Try:
QUESTION
I try to install https://www.creative-tim.com/product/argon-pro-react-native, a template from Creative Tim for React Native. I follow all the steps, and when I launch Expo Go, I have this error :
...Unable to resolve module expo-modules-core from /Users/MYNAMES/Desktop/argon-pro-react-native-v1.6.0/node_modules/expo-splash-screen/build/SplashScreen.js: expo-modules-core could not be found within the project.
ANSWER
Answered 2022-Jan-27 at 13:29I reached the same error message while going through a React Native course on Udemy and it seems to be related to Expo changing the way it's modules should be installed.
Running this command on my terminal solved it:
QUESTION
I am in an Angular project in Ubuntu 21.04 in which I need version 10.13.0 of node but when I install it with nvm it comes without npm. I have been testing previous versions and all of them also come without npm at least until version 10.10.0 where they should all come with version 6.4.1 of npm. When I run:
nvm ls
this is the output:
...ANSWER
Answered 2022-Feb-05 at 06:13It appears that your default node version is v10.7.0. This doesn't meet your criteria. You'll have to set the default alias to v10 (not recommended).
QUESTION
I'm using ubuntu and installed node via nvm.
...ANSWER
Answered 2022-Jan-31 at 18:25Looks like you've used sudo
to install something globally before. You probably shouldn't be using sudo
with npm
or yarn
.
I know it sounds extreme, but if you've used sudo
in order to install npm packages and don't understand the ramifications of doing so (it allows the package author, or any of the authors of dependencies that package relies on to do anything everything they desire with your system; they could install backdoors or even update your bios if they wanted to). You may want to consider formatting your hard drive, resetting your bios, and reinstalling your operating system if you've made a habit of doing this.
Using sudo
with the global flag (-g
) also changes your npm folder's permissions, which causes issues like you are seeing above. If you don't want to follow my suggestion to reset your system, npm has an article on how you can try to fix npm's permissions: https://docs.npmjs.com/resolving-eacces-permissions-errors-when-installing-packages-globally .
QUESTION
I have been trying to trim whitespaces in my long array which consists of almost all the periodic table elements but not able to find the function that does that, I did read the documentation on trim but found out that none of them work with the array.
Here is my long array
...ANSWER
Answered 2022-Jan-28 at 11:44Just use map
with trim
as:
QUESTION
[Editing this question completely] Thank you , for those who helped in building the Periodic Table successfully . As I completed it , I tried to link it with another of my project E-Search
, which acts like Google and fetches answers , except that it will fetch me the data of the Periodic Table .
But , I got a problem - not with the searching but with the layout . I'm trying to layout the x-scrollbar in my canvas which will display results regarding the search . However , it is not properly done . Can anyone please help ?
Below here is my code :
...ANSWER
Answered 2021-Dec-29 at 20:33I rewrote your code with some better ways to create table. My idea was to pick out the buttons that fell onto a range of type and then loop through those buttons and change its color to those type.
QUESTION
Let's say I have an async function like this:
...ANSWER
Answered 2022-Jan-04 at 06:01def deco(coro1):
async def coro2(argOne, argTwo, argThree):
try:
await coro1(argOne, argTwo, argThree)
except:
print('Something went wrong.')
return coro2
@deco
async def foobar(argOne, argTwo, argThree):
print(argOne, argTwo, argThree)
QUESTION
After changing gulp 3 to 4 I receive the error when I try to run gulp build
:
ANSWER
Answered 2021-Nov-29 at 16:38In copy:css
you have this line:
paths.src.base + '/assets/css/argon.css'
where apparently your error is. The problem is your paths.src.base
is defined as
base: './'
to which you are adding /assets/css/argon.css
so you end up with
.//assets/css/argon.css
note the two leading backslashes.
Get rid of the leading backslash in the /assets/...
and check the rest of your code for the same problem.
Also since you are using gulp4 get rid of runSequence
- look at the documentation for gulp.series
.
Community Discussions, Code Snippets contain sources that include Stack Exchange Network
Vulnerabilities
No vulnerabilities reported
Install argon
argon.min.js [latest] [dev] - includes WebVR polyfill
argon.js [latest] [dev] - includes WebVR polyfill
argon.core.js [latest] [dev]
Clone argon
Make sure you have node.js/npm installed (There are many guides for this online)
Install jspm globally:
Go to the directory where you have argon.js downloaded and install dependencies
To run the typescript compiler and create a build, execute:
To test Argon, execute:
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