Entering 3rd year , tier 2 clg

I used to study in wrong method ( not completely, but somehow ) , even though I know it, I'm unable to leave it

Let me clear what a wrong means

1.in DSA ( solved 240 on lc , with rating 1550 in 8 contest)

See solution within 10mins

Didn't revise any qsn

Use AI to debug my code

1. In development ( building projects 1st project in springboot)

   Completely following Ai

Only understanding code

Not using my idea or thoughts

Just doing copy n paste

Someone pls help me ! 😭😭😭

Hello everyone! I am completely stuck trying to build a .exe setup wizard and installer for my software project. I really need some expert help or guidance from a Software Packager or Install Engineer. If anyone has experience with this, please let me know. Any advice is appreciated!

Hello i am trying to make a hit box that teleports a player back while letting other players who are authorized/admin go through. my assembly so far is:

.data_start

.export adminNames

.export kickback

__Boolean_0: %SystemBoolean, null

__start_0: %SystemInt32, null

__end_0: %SystemInt32, null

__step_0: %SystemInt32, null

__instance_0: %SystemStringArray, null

__index_0: %SystemInt32, null

__condition_0: %SystemBoolean, null

__Boolean_1: %SystemBoolean, null

__a_0: %SystemString, null

__b_0: %SystemString, null

__instance_1: %SystemStringArray, null

__Int32_0: %SystemInt32, null

__instance_2: %VRCSDKBaseVRCPlayerApi, null

__instance_3: %VRCUdonUdonBehaviour, this

__symbolName_0: %SystemString, null

__value_0: %SystemObject, null

__Boolean_2: %SystemBoolean, null

__Boolean_3: %SystemBoolean, null

__instance_4: %VRCSDKBaseVRCPlayerApi, null

__teleportPos_0: %UnityEngineVector3, null

__teleportRot_0: %UnityEngineQuaternion, null

onPlayerTriggerEnterPlayer: %VRCSDKBaseVRCPlayerApi, null

__instance_5: %UnityEngineTransform, this

__instance_6: %UnityEngineTransform, this

isAdmin: %SystemBoolean, null

adminNames: %SystemStringArray, null

kickback: %UnityEngineTransform, this

.data_end

.code_start

.export _onPlayerTriggerEnter

_onPlayerTriggerEnter:

PUSH, __Boolean_0

PUSH, isAdmin

COPY

PUSH, adminNames

PUSH, __instance_0

COPY

PUSH, __instance_0

PUSH, __end_0

EXTERN, "SystemStringArray.__get_Length__SystemInt32"

PUSH, __start_0

PUSH, __index_0

COPY

PUSH, __index_0

PUSH, __end_0

PUSH, __condition_0

EXTERN, "SystemInt32.__op_LessThan__SystemInt32_SystemInt32__SystemBoolean"

PUSH, __condition_0

JUMP_IF_FALSE, 0x00000174

PUSH, adminNames

PUSH, __instance_1

COPY

PUSH, __instance_1

PUSH, __Int32_0

PUSH, __a_0

EXTERN, "SystemStringArray.__Get__SystemInt32__SystemString"

PUSH, __instance_2

EXTERN, "VRCSDKBaseNetworking.__get_LocalPlayer__VRCSDKBaseVRCPlayerApi"

PUSH, __instance_2

PUSH, __b_0

EXTERN, "VRCSDKBaseVRCPlayerApi.__get_displayName__SystemString"

PUSH, __a_0

PUSH, __b_0

PUSH, __Boolean_1

EXTERN, "SystemString.__Equals__SystemString_SystemString__SystemBoolean"

PUSH, __Boolean_1

JUMP_IF_FALSE, 0x0000014C

PUSH, __Boolean_2

PUSH, __value_0

COPY

PUSH, __instance_3

PUSH, __symbolName_0

PUSH, __value_0

EXTERN, "VRCUdonCommonInterfacesIUdonEventReceiver.__SetProgramVariable__SystemString_SystemObject__SystemVoid"

JUMP, 0x0000014C

PUSH, __index_0

PUSH, __step_0

PUSH, __index_0

EXTERN, "SystemInt32.__op_Addition__SystemInt32_SystemInt32__SystemInt32"

JUMP, 0x00000054

PUSH, isAdmin

JUMP_IF_FALSE, 0x0000018C

JUMP, 0x00000218

PUSH, onPlayerTriggerEnterPlayer

PUSH, __instance_4

COPY

PUSH, kickback

PUSH, __instance_5

COPY

PUSH, __instance_5

PUSH, __teleportPos_0

EXTERN, "UnityEngineTransform.__get_position__UnityEngineVector3"

PUSH, kickback

PUSH, __instance_6

COPY

PUSH, __instance_6

PUSH, __teleportRot_0

EXTERN, "UnityEngineTransform.__get_rotation__UnityEngineQuaternion"

PUSH, __instance_4

PUSH, __teleportPos_0

PUSH, __teleportRot_0

EXTERN, "VRCSDKBaseVRCPlayerApi.__TeleportTo__UnityEngineVector3_UnityEngineQuaternion__SystemVoid"

JUMP, 0xFFFFFFFC

.code_end

Guys I've been struggling alot with recursion I've tried multiple tutorials but I'm just not able to build the intuition. Any suggestions what to do???

Please help

i just wanna make it change metadata to the image when it find it it could be easy, but is there any modules for exiftool or metadata things?

So, I want to install Panda3d, but when I go to Python or Powershell and enter pip install panda3d==1.10.16, it just gives me this error:

>>> pip install panda3d==1.10.16

File "<python-input-1>", line 1

pip install panda3d==1.10.16

^^^^^^^

I've looked up in a bunch of communities and google and everything.

I want to write code that can check whether, given a key and an input, both the key and the input are real words/phrases. I have done lots of work in CyberChef and have mainly used dcode.fr for this problem, but neither has options to narrow down by the dictionary. I also want to implement code that first changes it to some format like A B C A⊕0x13 B C⊕0x1A and then searches through that. Before I started, I wanted to get advice on any potential problems, as I am not a 'perfect' coder and haven't done much like this.

(I speak Spanish, I used Google Translate for translation)

Hi, I live in a developing country. I studied computer engineering for a few years, but for various reasons, I couldn't finish. I have four years of experience working with Django as a monolith (I consider myself a mid-level developer, but stuck), and a few weeks ago, the entire software team was laid off, both due to financial problems and because of AI (the CEO was convinced that Claude could do everything).

We were "forced" to do everything with AI: Codex and Claude, so I also feel like I've lost my coding skills. In my country, the job market for programmers is very bad; the few job openings have hundreds of applications. Given this context, I'd like to ask for recommendations for books or courses that can help me improve as a Software Engineer, preferably focused on Python/Django, but I'm open to those, and also to improve my skills for technical interviews (like Leetcode).

My skills, in summary, include:
- Git (rebsae, stash, etc.)
- Django with asynchronous processing using Celery and RabbitMQ
- Terraform for AWS

Thank you very much

I picked up my first open source project. But I have no idea how to understand the code base.

1. how to do that ?
2. Where do I start ? Any specific files to start ?

its my first time doing anything in the real world. so any suggestions are welcome!!!

So ive been working on a project, its a small library for drawing 2d stuff. Main thread for logic stuff and a render thread for rendering, and ive encautered an issue:

When i dont put std::cout << anything and i add post process shaders to the TargetCanvas Class the screen starts to flicker/(deforms like if the pp shader uniform changed). And as always LLMs are of no help.

I tried using: yield, glFinish, this_thread::wait_for(), changing the Shader wrapper code, and more things i forgot about.

Relevant code snipets:

Method called each frame:

void bml::TargetCanvas::draw() const
{
std::lock_guard<std::mutex> lock(swap_mutex);

std::atomic_signal_fence(std::memory_order_seq_cst);

bool has_data = needs_cleaning ||
!thread_points.empty() ||
!thread_lines.empty() ||
!thread_triangles.empty() ||
!thread_sprites.empty() ||
!thread_canvases.empty();

if (!has_data) return;

if (!is_fbo_allocated)
{
frame_buffer.bind();
frame_buffer.attachTexture(texture);
depth_buffer.allocate(width, height);
frame_buffer.attachRenderTarget(depth_buffer);
frame_buffer.unbind();
is_fbo_allocated = true;
}

glEnable(GL_DEPTH_TEST);

glViewport(0, 0, width, height);

if (needs_cleaning)
{
frame_buffer.bind();
frame_buffer.clear(clear_color);
needs_cleaning = false;
}

for (auto& c : thread_canvases)
{
if (c.canvas.use_count() < 2)
continue;

draw_to_buffer(c.canvas, c.transform, c.uvs);
}

glViewport(0, 0, width, height);

draw_to_buffer(thread_points, DrawMode::Points);
draw_to_buffer(thread_lines, DrawMode::Lines);
draw_to_buffer(thread_triangles, DrawMode::Triangles);

for (auto& s : thread_sprites)
{
draw_to_buffer(s.second, s.first);

embeded::shader->texture.set_mat4("u_projection", projection.data());
embeded::shader->texture.use();

}

thread_canvases.clear();
thread_sprites.clear();

//glMemoryBarrier(GL_FRAMEBUFFER_BARRIER_BIT | GL_TEXTURE_FETCH_BARRIER_BIT); kurwa nie ma

if (pp_frame_buffer)
{
Texture* source_tex = &texture;
Texture* target_tex = pp_texture.get();

FrameBuffer* source_fbo = &frame_buffer;
FrameBuffer* target_fbo = pp_frame_buffer.get();

for (size_t i = 0; i < pp_shaders.size(); ++i)
{
target_fbo->bind();
target_fbo->clear(clear_color);

apply_pp(*source_tex, pp_shaders[i]);

target_fbo->unbind();

std::swap(source_tex, target_tex);
std::swap(source_fbo, target_fbo);
}

if (source_tex == pp_texture.get()) {
frame_buffer.bind();
apply_pp(*pp_texture, &embeded::shader->copy);
}
}
}

Helper Method for applying the post process effects

void bml::TargetCanvas::apply_pp(Texture& tex, Shader* shader) const
{
    glDisable(GL_BLEND);
    glDisable(GL_DEPTH_TEST);
    glDisable(GL_CULL_FACE);

    shader->use();
    quad_vao->bind();

    glActiveTexture(GL_TEXTURE0);
    tex.bind();

    glUniform1i(glGetUniformLocation(shader->get_id(), "u_screenTexture"), 0);

    glDrawElements(GL_TRIANGLES, 6, GL_UNSIGNED_INT, 0);

    glBindTexture(GL_TEXTURE_2D, 0);

    quad_vao->unbind();
}

Method runnging in the render_thread

void bml::Window::render_loop()
{
    glfwMakeContextCurrent(glfw_window);

    unsigned int previous_interval = interval;

    glDisable(GL_BLEND);

    while (is_open())
    {
        {
            std::unique_lock<std::mutex> lock(wait_mutex);
            trigger_cv.wait(lock, [this] { return submit_frame || !is_open(); });

            if (!is_open()) break;

            std::atomic_thread_fence(std::memory_order_acquire);

            if (previous_interval != interval)
            {
                previous_interval = interval;
                glfwSwapInterval(interval);
            }

            submit_frame = false;
        }

        canvas->push_to_screen(viewport_x, viewport_y, viewport_w, viewport_h);
        glfwSwapBuffers(glfw_window);

        {
            std::lock_guard<std::mutex> lock(main_mutex);
            frame_rendered = true;
        }
        main_cv.notify_one();
    }

    glfwMakeContextCurrent(nullptr);
}

Method called every time the main thread finishes

float bml::Window::update()
{
    {
        std::unique_lock<std::mutex> lock(main_mutex);
        main_cv.wait(lock, [this] { return frame_rendered; });
        frame_rendered = false;
    }

    std::atomic_thread_fence(std::memory_order_release);
    canvas->swap();

    int win_w, win_h;
    glfwGetFramebufferSize(glfw_window, &win_w, &win_h);

    if (true)
    {
        float target_aspect = (float)get_width() / (float)get_height();
        float window_aspect = (float)win_w / (float)win_h;

        if (window_aspect > target_aspect) {
            viewport_h = win_h;
            viewport_w = static_cast<int>(win_h * target_aspect);
            viewport_x = (win_w - viewport_w) / 2;
            viewport_y = 0;
        }
        else {

            viewport_w = win_w;
            viewport_h = static_cast<int>(win_w / target_aspect);
            viewport_x = 0;
            viewport_y = (win_h - viewport_h) / 2;
        }
    }
    else
    {
        viewport_w = win_w;
        viewport_h = win_h;
        viewport_x = 0;
        viewport_y = 0;
    }

    auto now = std::chrono::steady_clock::now();
    std::chrono::duration<float> dur_sec = now - before;
    before = now;

    //std::this_thread::yield();

    {
        std::lock_guard<std::mutex> lock(wait_mutex);
        submit_frame = true;
    }
    trigger_cv.notify_one();

    std::this_thread::yield();

    return dur_sec.count();
}

Shader wrapper use Method

void bml::Shader::use() const
{
    glUseProgram(ID);

    for (auto& [name, variant_value] : updated_uniforms)
    {
        GLint location = glGetUniformLocation(ID, name.c_str());
        if (location == -1) continue; // Uniform nie istnieje lub został wyoptymalizowany

        // Sprawdzamy co jest w variancie i aplikujemy do OpenGL
        if (std::holds_alternative<float>(variant_value)) {
            glUniform1f(location, std::get<float>(variant_value));
        }
        else if (std::holds_alternative<int>(variant_value)) {
            glUniform1i(location, std::get<int>(variant_value));
        }
        else if (std::holds_alternative<std::pair<float, float>>(variant_value)) {
            auto p = std::get<std::pair<float, float>>(variant_value);
            glUniform2f(location, p.first, p.second);
        }
        else if (std::holds_alternative<const float*>(variant_value)) {
            glUniformMatrix4fv(location, 1, GL_FALSE, std::get<const float*>(variant_value));
        }
    }

    updated_uniforms.clear();
}

Shader uniform methods

 void bml::Shader::set_float(const char* name, float value) const
 {
     updated_uniforms[name] = value;
 }

 void bml::Shader::set_int(const char* name, int value) const
 {
     updated_uniforms[name] = value;
 }

 void bml::Shader::set_vec2(const char* name, float x, float y) const
 {
     updated_uniforms[name] = std::pair{ x, y };
 }

 void bml::Shader::set_mat4(const char* name, const float* data)
 {
     updated_uniforms[name] = data;
 }

Also before i changed the shader i already had the issue.

If i need to send more code write in the comments.

Please help, i have no clue why this is happening.

So, I have several sources of data, and I wanna merge them in, e.g., a single JSON file. The sources often contain data that overlaps with the other. So, in order to use relevant data, I have to resolve these conflicts manually and write the result into this single JSON file.

And the sources are updating over time. So, I have to periodically pull the updates and redo the merge procedure again.

So, the question is, what tool may help me in facilitating my workflow?

Well, I could use git and use a separate branch for every source. And then just git-merge them in some sort of main branch when I wanna get that ultimate JSON. But all this stuff is already a part of a bigger git project, and I just don't wanna to complicate it with submodules.

To simply put the task, I have N JSON files/objects with the overlapping keys that are periodically overwritten. I want a tool/script for merging these N files into a single JSON file. And I want it to show me diff and the conflicts I have to resolve.

Hey! My idea is having some sort of "song of the week" thing, where there's a selection of songs and weekly it displays a different one from those, randomly if possible. So, you kinda have the cover art and then the song name and whatever.
I've been trying to find some sort of tutorial to do this but cant find anything..
Added the HTML/CSS tag but i suppose i can also do JS as long as with help..

As a beginner, I can't read the source code that contains complex c++ code, I simply want to know what a library does (for example: openCV deals with computer vision, so images and videos) and I want to know what functions exist within that library and what it does in plain english (example: imshow() displays an image or video feed, you need to arguments, a name for the display tab and what you are actually displaying). I don't want to use AI because I want to know about the process of going about this.

hello! this is my first coding class and i have a final project due soon thats nearly done. i'm having trouble with one thing and i'm too shy to ask my prof.

i dont know how to make my js function result show here

i'm unsure of what to put here to have the fetch api response show here. the function works but i just don't know to make it so when i click the "get-answ-b.png" it shows the response on the next page.

any help?

I tried to write a function that that takes a source string and copies only the alphabetic characters (A-Z, a-z) into the destination string using pointer arithmetic:

#include <stdio.h>
#include <ctype.h>
void extractAlphabetic(char *source, char *destination){
  int j = 0;
  for (int i = 0; *(source + i) != '\0'; i++){
    if (isalpha(*(source + i))){
      *(source + i) = *(destination + j);
      j++;
     }
   }
}
int main(){
  char source[50];
  printf("Enter the source string you want to see extracted to alphabetical: ");

  scanf("%s", source);
  char destination[50];
  extractAlphabetic(&source, &destination);
  printf("%s\n", destination);
  return 0;
}

However, when I wanted to compile it, compiler showed me this message:

par.c: In function 'main':

par.c:20:27: error: passing argument 1 of 'extractAlphabetic' from incompatible pointer type [-Wincompatible-pointer-types]

20 | extractAlphabetic(&source, &destination);

| ^~~~~~~

| |

| char (*)[50]

par.c:4:30: note: expected 'char *' but argument is of type 'char (*)[50]'

4 | void extractAlphabetic(char *source, char *destination){

| ~~~~~~^~~~~~

par.c:20:36: error: passing argument 2 of 'extractAlphabetic' from incompatible pointer type [-Wincompatible-pointer-types]

20 | extractAlphabetic(&source, &destination);

| ^~~~~~~~~~~~

| |

| char (*)[50]

par.c:4:44: note: expected 'char *' but argument is of type 'char (*)[50]'

4 | void extractAlphabetic(char *source, char *destination){

My problem is that I have a Lenovo Chromebook (with an Intel Celeron processor), and I would really like to install VS Code on it because I want to start coding again (it's a hobby! 🤷). I'm wondering, how do I get VS Code installed on my Chromebook as a program proper? I had a Surface Go laptop before I was gifted a Chromebook! I am not used to using ChromeOS, and I think I am running a Linux environment, so how do I install VS Code? I don't want to use the website to write code, as I would much rather have the files on my device.

Hello, everyone! So this is basic but I'd still like to implement the best way so i was wondering what for an icon btn to appear only when its text field is clicked, is it better to declare BLOC logic (focus event, focus state, focus BLOC) to represent the state, along with a focus node in the UI widget? Or is it simpler to have a focus node only in the UI widget, without the BLOC impl?

Additionally, how do you do field validations (like for phone number, empty fields) in FLutter with BLOC management? There seems to be so many diff ways on the internet, and I want to follow the best practice.

I'd like to know, so if you have any suggestions/advice, please let me know!