stdlib | Contains functions for the HASH stdlib | Hashing library

by hashintel TypeScript Version: Current License: Apache-2.0

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kandi X-RAY | stdlib Summary

stdlib is a TypeScript library typically used in Security, Hashing applications. stdlib has no bugs, it has no vulnerabilities, it has a Permissive License and it has low support. You can download it from GitHub.

Contains functions for the HASH stdlib

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stdlib has a low active ecosystem.

It has 11 star(s) with 0 fork(s). There are 7 watchers for this library.

It had no major release in the last 6 months.

stdlib has no issues reported. There are no pull requests.

It has a neutral sentiment in the developer community.

The latest version of stdlib is current.

Quality

stdlib has no bugs reported.

Security

stdlib has no vulnerabilities reported, and its dependent libraries have no vulnerabilities reported.

License

stdlib is licensed under the Apache-2.0 License. This license is Permissive.

Permissive licenses have the least restrictions, and you can use them in most projects.

Reuse

stdlib releases are not available. You will need to build from source code and install.

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Community Discussions

Trending Discussions on stdlib

How to use select() to set a timer for sockets?

Can I free mallocs that are being generated in every step of a recursion in C?

Implement barrier with pthreads on C

.exe file closing abruptly outside code editor

Unexpected token error in concatenation in C language

GStreamer C library not working properly on Xubuntu

Problem with sending data from userspace to bpf program with maps

How do a sort a array of void* that points to places with names?

Python tkinter - How to reload label's image every second?

The input that i give to my %f does not save

QUESTION

How to use select() to set a timer for sockets?

Asked 2021-Jun-15 at 21:17

I'm currently using Winsock2 to be able to test a connection to multiple local telnet servers, but if the server connection fails, the default Winsock client takes forever to timeout.

I've seen from other posts that select() can set a timeout for the connection part, and that setsockopt() with timeval can timeout the receiving portion of the code, but I have no idea how to implement either. Pieces of code that I've copy/pasted from other answers always seem to fail for me.

How would I use both of these functions in the default client code? Or, if it isn't possible to use those functions in the default client code, can someone give me some pointers on how to use those functions correctly?

...

ANSWER

Answered 2021-Jun-15 at 21:17

select() can set a timeout for the connection part.

Yes, but only if you put the socket into non-blocking mode before calling connect(), so that connect() exits immediately and then the code can use select() to wait for the socket to report when the connect operation has finished. But the code shown is not doing that.

setsockopt() with timeval can timeout the receiving portion of the code

Yes, though select() can also be used to timeout a read operation, as well. Simply call select() first, and then call recv() only if select() reports that the socket is readable (has pending data to read).

Try something like this:

Source https://stackoverflow.com/questions/67990097

QUESTION

Can I free mallocs that are being generated in every step of a recursion in C?

Asked 2021-Jun-15 at 20:53

I am making a simulation with C (for perfomance) that (currently) uses recursion and mallocs (generated in every step of the recursion). The problem is that I am not being able to free the mallocs anywhere in the code, without having the wrong final output. The code consist of two functions and the main function:

evolution(double initial_energy)

...

ANSWER

Answered 2021-Jun-13 at 04:47

You're supposed to free memory right after the last time it will be used. In your program, after the while loop in recursion, Energy isn't used again, so you should free it right after that (i.e., right before return event_counter;).

Source https://stackoverflow.com/questions/67954931

QUESTION

Implement barrier with pthreads on C

Asked 2021-Jun-15 at 18:32

I'm trying to parallelize a merge-sort algorithm. What I'm doing is dividing the input array for each thread, then merging the threads results. The way I'm trying to merge the results is something like this:

...

ANSWER

Answered 2021-Jun-15 at 01:58

I'm trying to parallelize a merge-sort algorithm. What I'm doing is dividing the input array for each thread, then merging the threads results.

Ok, but yours is an unnecessarily difficult approach. At each step of the merge process, you want half of your threads to wait for the other half to finish, and the most natural way for one thread to wait for another to finish is to use pthread_join(). If you wanted all of your threads to continue with more work after synchronizing then that would be different, but in this case, those that are not responsible for any more merges have nothing at all left to do.

This is what I've tried:

Source https://stackoverflow.com/questions/67977544

QUESTION

.exe file closing abruptly outside code editor

Asked 2021-Jun-15 at 14:22

So I compiled and ran the following C program:

...

ANSWER

Answered 2021-Jun-15 at 14:22

Because once all command are executed, the terminal close itself.

Source https://stackoverflow.com/questions/67984067

QUESTION

Unexpected token error in concatenation in C language

Asked 2021-Jun-15 at 12:48

This is the code I have written for the MPI's Group Communication Primitives-Brod cast example using c language try with Ubuntu system. I wrote a code for the string and variable concatenation here.

When I am compiling this code it shows error like that.(Please refer the image)

Can anyone help me to solve this?

...

ANSWER

Answered 2021-Jun-15 at 12:43

Change this line :

Source https://stackoverflow.com/questions/67986449

QUESTION

GStreamer C library not working properly on Xubuntu

Asked 2021-Jun-15 at 11:39

I am writing a program in C language using gtk3 library. I want it to be able to receive a h264 video stream from a certain IP address (localhost) and UDP/RTP PORT (5000).

In order to do it, I am using gstreamer to both stream and receive the video.

I managed to stream the video using the following pipeline :

send.sh :

gst-launch-1.0 filesrc location=sample-mp4-file.mp4 ! decodebin ! x264enc ! 'video/x-h264, stream-format=(string)byte-stream' ! h264parse ! rtph264p

I managed to display the video in a new window using the following pipeline :

receive.sh :

gst-launch-1.0 udpsrc port=5000 caps="application/x-rtp,encoding-name=H264" ! rtph264depay ! decodebin ! videoconvert ! autovideosink

At this point, everything works fine. But now I want to receive the stream and display it inside my C/GTK program. I am using the following code (found on internet and adapted to make it compile) :

...

ANSWER

Answered 2021-Jun-15 at 11:39

Here is the solution I found :

Changin xvimagesink by ximagesink :

sink = gst_element_factory_make ("xvimagesink", NULL); g_assert(sink);

becomes

sink = gst_element_factory_make ("ximagesink", NULL); g_assert(sink);

Hope it will help some of you facing the same problem.

Source https://stackoverflow.com/questions/67808075

QUESTION

Problem with sending data from userspace to bpf program with maps

Asked 2021-Jun-15 at 07:28

I have problem with my bpf program. I getting error while loading this program. my bpf program is:

...

ANSWER

Answered 2021-Jun-15 at 07:28

TL;DR. You should check that the pointer returned by bpf_map_lookup_elem is not NULL.

With the following logs, the BPF verifier is telling you that, when it reaches the dereference of my_pid, the pointer may still have a NULL value. It thus contains a map value or a NULL value, i.e., map_value_or_null.

Source https://stackoverflow.com/questions/67980932

QUESTION

How do a sort a array of void* that points to places with names?

Asked 2021-Jun-15 at 02:51

Basically there are rectangles (buildings) and circles (people).

The task I need to do is basically, when a function "fg" is called, every circle that is inside a given radius needs to run to the closest rectangle, and after all the circles inside the radius finds a rectangle, I need to report on a .txt file the names of the circles that run to each rectangle sorted alphabetically.

Such as:

Rectangle A: c1 c2 c3

Rectangle B: c7 c11 c20

...

And so on...

I need to store the addresses of the circles that run, on a vector of each rectangle. I tried to use qsort from stdlib.h, but maybe the function that i use to compare is wrong

(EDIT - full code to better understand):

...

ANSWER

Answered 2021-Jun-15 at 02:51

The third parameter needs to be the size of the actual array elements:

Source https://stackoverflow.com/questions/67979249

QUESTION

Python tkinter - How to reload label's image every second?

Asked 2021-Jun-14 at 21:36

I have an image (QR image) that i have to display it, and keep refreshing it every time. I tried many solutions but none worked, this is my code:

...

ANSWER

Answered 2021-Jun-14 at 21:36

You have to keep a reference to the PhotoImage instance first, which you are not:

Source https://stackoverflow.com/questions/67932403

QUESTION

The input that i give to my %f does not save

Asked 2021-Jun-14 at 20:42

The gradeOne and secondGrade does not save the number that i give. So i cant have the average , because, always end in a division of (0 + 0)/2, can anyone help me?

...

ANSWER

Answered 2021-Jun-14 at 15:01

%f in scanf() is for reading float. You should use %lf to read double.

Note that you should use %f in printf() for printing double. Newer specification allows %lf for printf(), but %f should be better for compatibility.

Source https://stackoverflow.com/questions/67972648

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