rewind | The musicorum rewind repository | Frontend Framework library
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kandi X-RAY | rewind Summary
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Lines of Code : 5License : Permissive (MIT License)
Copypublic static String underscorifySubstring(String str, String substring) {
// Write your code here.
List locations = collapse(getLocations(str, substring));
return underscorifySubstring(str, locations);
} Community Discussions
Trending Discussions on rewind
QUESTION
I'm very new to OpenCL. I created a simple working code to perform A = AB + C, and used that to get to my actual task, which is to read in a raw image file and do debayering on it. But the modified code fails at clCreateProgramWithSource sometimes with error code -6. There's minimal changes, and I compared with a diff but for the life of me I can't figure out why I'm getting error in the failed code. So here's the working code:
ANSWER
Answered 2022-Mar-28 at 08:26the problem is that you're giving it the address of int kfilesize where the clCreateProgramWithSource() expects an address of size_t. It ends up reading an 8 byte integer from an address of a 4 byte integer. IOW it reads some garbage from the stacks, and thinks you're giving some (probably) billion-bytes long source code.
QUESTION
I want to malloc a 2d array and put data from a file in it. But it only shows the last items of my file. What do I have to do?
The file has 600.000 numbers like "280.000" in it.
...ANSWER
Answered 2022-Mar-21 at 08:25This while loop
QUESTION
I am trying to verify the signature of my webhooks from github. Following their documentation, there is only an example for ruby:
...ANSWER
Answered 2022-Mar-10 at 12:09I've just created a test Github webhook and was able to successfully verify a push event in Lucee using the following basic code:
QUESTION
in my program I defined a data type called Lyapunov_orbit that contains 8 fields, then I used it to read data from external .txt file (see below where I report only a few lines for convenience because the file has about 4000 lines). I need to perform some operations by using such structure (as to find minimum and maximum value of an array) but to handle it I had to declare an "auxiliary" variable called vec_J_cst because if I try to directly use my data strucutre, I get some errors (the structure-name is invalid or missing).
Here is the .txt file:
...ANSWER
Answered 2022-Feb-24 at 15:55The problem with the lines
QUESTION
Ruby 3.1.0
I am trying to parse JSON Lines without blowing up memory. My routine prints nothing. I am wondering where I am going wrong. I open a tempfile to hold the huge file, which I am thinking is mistake #1. But I don't know how else to structure this. I then try and copy the huge file from Google to my tempfile, and then step through that one line at a time. I get nothing... I am perplexed.
Oh. I figured it out. copy_stream leaves the file at EOF. I just had to rewind it to use it.
...ANSWER
Answered 2022-Feb-16 at 17:25It was simple. I did not know that copy_stream method left the file pointer at the end of the file. So I just had to do a rewind on it, and it all worked as expected.
QUESTION
I have a minimal complete example where the Linux API behavior seems to be a bit ambiguous. The stdout is closed, reopened and used as a regular file's descriptor:
...ANSWER
Answered 2022-Feb-08 at 15:28The question is:
Is this a bug or the right way?
It is the right way.
/proc/$$/fd/1 is a symlink to testfile, so >> /proc/$$/fd/1 is the same as >> testfile. It is a separate child process that writes to testfile. When this child process terminates, you see the stuff it has written in the file. It has no effect on your parent process.
STDOUT_FILENO is not special, it's just like any other file descriptor.
Why child processes affect your parent process file descriptor position? Because duplicated file descriptors refer to the same open file description. Read it twice - "file descriptor" != "file description". It is like a double-mapping. We say, file descriptors are not copied, they are duplicated, they share the file offset and file status flags, because they share the file description. See man 2 dup and man 2 open.
When a separate process opens the same file, it has a separate file description, so it does not affect your process file description.
(It is so badly named. I mentally call "file descriptor" like "system handle" (because it can refer to anything kernel wants to) and call "file description" like "file data" (if it's a file, it can be anything kernel wants to). It's then clear - this "system handle" refers to this "file data" and "system handle" is duplicated between processes that means that two "system handles" refer to the same open "file data". And "file data" stores file position and file locks and such. Processes have "handles", not "data". "File data" are removed automatically, when the last "system handle" is getting removed (the confusing man 2 unlink).)
QUESTION
I've got a simple wav header reader i found online a long time ago, i've gotten back round to using it but it seems to replace around 1200 samples towards the end of the data chunk with a single random repeated number, eg -126800. At the end of the sample is expected silence so the number should be zero.
Here is the simple program:
...ANSWER
Answered 2022-Jan-07 at 21:55WAV is just a container for different audio sample formats.
You're making assumptions on a wav file that would have been OK on Windows 3.11 :) These don't hold in 2021.
Instead of rolling your own Wav file reader, simply use one of the available libraries. I personally have good experiences using libsndfile, which has been around roughly forever, is very slim, can deal with all prevalent WAV file formats, and with a lot of other file formats as well, unless you disable that.
This looks like a windows program (one notices by the fact you're using very WIN32API style capital struct names – that's a bit oldschool); so, you can download libsndfile's installer from the github releases and directly use it in your visual studio (another blind guess).
QUESTION
I'm trying to feed audio from an online communication app into the Vosk speech recognition API.
The audio comes in form of a byte array and with this audio format PCM_SIGNED 48000.0 Hz, 16 bit, stereo, 4 bytes/frame, big-endian.
In order to be able to process it with Vosk, it needs to be mono and little-endian.
This is my current attempt:
...ANSWER
Answered 2021-Sep-29 at 16:37Signed PCM is certainly supported. The problem is that 48000 fps is not. I think the highest frame rate supported by Java directly is 44100.
As to what course of action to take, I'm not sure what to recommend. Maybe there are libraries that can be employed? It is certainly possible to do the conversions manually with the byte data directly, where you enforce the expected data formats.
I can write a bit more about the conversion process itself (assembling bytes into PCM, manipulating the PCM, creating bytes from PCM), if requested. Is the VOSK expecting 48000 fps also?
Going from stereo to mono is a matter of literally taking the sum of the left and right PCM values. It is common to add a step to ensure the range is not exceeded. (16-bit range if PCM is coded as normalized floats = -1 to 1, range if PCM is coded as shorts = -32768 to 32767.)
Following code fragment is an example of taking a single PCM value (signed float, normalized to range between -1 and 1) and generating two bytes (16-bits) in little endian order. The array buffer is of type float and holds the PCM values. The array audioBytes is of type byte.
QUESTION
I'm trying to add Vue-Splide to my Nuxt project, after following the Vue-Splide documentation to install the plugin, and registering it as a Nuxt plugin I get the error Cannot use import statement outside a module.
nuxt.config.js
ANSWER
Answered 2021-Nov-30 at 02:40The documentation of the vue-splide integration is clearly talking about Vue3 composition API.
Checking in the github issues of vue-splide, I found this one which is referencing a solution that you've linked above. Meanwhile, when trying this, those are the warnings that I do have in my CLI.
Those are also related to Vue3 (which is not compatible with Nuxt2, only Nuxt3 supports Vue3). Looking at the date of all the posts, it looks like it was matching somewhat the time-frame when Vue3 was still in a beta-limbo and probably not adopted by everybody.
At some point, I guessed that the package maybe lost some retro-compatibility with Vue2 in the next months. I then tried to install the version 0.3.5 of @splidejs/vue-splide rather than the latest one and it's working perfectly fine with it!
Here is the whole setup to have it working with Nuxt2
nuxt.config.js
QUESTION
I wrote a C++ iterator to go over an std::string which is UTF-8.
The idea is for the iterator to return char32_t characters instead of bytes. The iterator can be used to go forward or backward. I can also rewind and I suppose the equivalent of rbegin().
Since a character can span multiple bytes, my position within the std::string may jump by 2, 3, or 4 bytes (the library throws if an invalid character is encountered).
This also mean the distance to a certain character does not always increment one by one. In other words, ++it may increment the position by a number from 1 to 4 and --it reverse subtract in a similar manner.
Is that an expected/legal behavior for a C++ iterator?
...ANSWER
Answered 2021-Nov-07 at 01:52Many algorithms in C++ work equally well with plain pointers in addition to iterators. std::copy will work with plain pointers, just fine. std::find_if will be happy too. And so on.
By a fortunate coincidence std::copy invokes the ++ operator on the pointers you feed to it. Well, guess what? Passing a bunch int *s to std::copy results in the actual pointer being increment by sizeof(int), instead of 1.
std::copy won't care.
The properties of iterators and their requirements are defined in terms of the logical results and the logical effects of what the various operators cause to happen (as well as which operators are valid for a given iterator). Whether the internal implementation of an iterator increments the internal value, that represents the iterator in some way, by 1, 2, 4, or 42, is immaterial. Note that reverse iterators result in the actual internal pointer getting decremented by its ++ operator overload.
If your custom iterator's implementation of the ++, --, *, [], +, and - operators (whichever ones are appropriate for your iterator) meets all requirements of their assigned iterator category, then the actual effects of these operators on the actual raw pointer value, that represents your iterator, is irrelevant.
The answer to your question is as follows, assuming that your custom iterator is a random access iterator: if all the required operator overloads meet all requirements of a random access iterator, then the actual effects on the underlying pointer value are irrelevant.
The same holds true for any iterator category, not just random access.
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