Actually... probably it's me being an idiot I put my try/catch outside the WndProc, and the runtime exception is being risen in the WndProc could that be the problem?

Can RAII be complex?

Once understood, the principle behind RAII is pretty straightforward. You basically tie the life cycle of an acquisition to the lifetime of an object.

yea, but can the complexity of lifetime management lead to complex RAII ? for example: an object manager can take ownership of other objects objects may also be transfered between object managers an object can be owned by another object an object could be shared between multiple objects and/or multiple object managers an object could become orphaned (not owned by anything)

yea, but can the complexity of lifetime management lead to complex RAII ? for example: an object manager can take ownership of other objects objects may also be transfered between object managers an object can be owned by another object an object could be shared between multiple objects and/or multiple object managers an object could become orphaned (not owned by anything)

The principle behind RAII does not change, so no. Tracking ownership and managing lifetimes can be complex but RAII is not.

You decide how a class is going to be used when you write the class. The way you implement RAII is decided by how your copy constructor, copy assignment, move constructor, move assignment and destructor behave. That alone decides what your RAII implementation looks like

The principle behind RAII does not change, so no. Tracking ownership and managing lifetimes can be complex but RAII is not.

so RAII is seperate from that?

how would i go about lifetime management for a Program class and a Shader class, in the case of this? "It is permissible to attach multiple shader objects of the same type because each may contain a portion of the complete shader. It is also permissible to attach a shader object to more than one program object. If a shader object is deleted while it is attached to a program object, it will be flagged for deletion, and deletion will not occur until glDetachShader is called to detach it from all program objects to which it is attached.”

I am assuming Shader is a base class. The Program class will have a vector of shared_ptrs to Shader class instances that will represent the Shaders attached to the Program instances. Each shader will have a vector of weak_ptra to the Program class instances it is attached to.

this is my current program functions relating to Shader class void attachShader(const Shader & shader) { GL_CHECK_ERROR(glAttachShader(resource, shader.resource)); } void detachShader(const Shader & shader) { GL_CHECK_ERROR(glDetachShader(resource, shader.resource)); } and this is how i create a program static Program createProgram(const GLchar *vertexSource, const GLchar *fragmentSource) { Program p; p.attachToCurrentContext(); // register callbacks including rebinding and deletion callbacks Shader v(GL_VERTEX_SHADER, vertexSource); v.attachToCurrentContext(); // register callbacks including rebinding and deletion callbacks Shader f(GL_FRAGMENT_SHADER, fragmentSource); f.attachToCurrentContext(); // register callbacks including rebinding and deletion callbacks p.create(); p.attachShader(v); p.attachShader(f); p.link(); p.checkLinkStatus(); return p; }

attaches and detaches a shader to/from a program

glAttachShader and glDetachShader are part of the OpenGL api

how would i go about lifetime management for a Program class and a Shader class, in the case of this? "It is permissible to attach multiple shader objects of the same type because each may contain a portion of the complete shader. It is also permissible to attach a shader object to more than one program object. If a shader object is deleted while it is attached to a program object, it will be flagged for deletion, and deletion will not occur until glDetachShader is called to detach it from all program objects to which it is attached.”

guys which youtube channel is good for c++

read book i think better than watch video for learning

Then recommend some books for Data structures and Algorithm

So tell me which programmes I should make first because I just j Learned c

Then recommend some books for Data structures and Algorithm

https://github.com/rby90/Project-Based-Tutorials-in-C

Are they bigginer friendly

Oh. Emm maybe some.

Has anyone here read the book "Effective C: An Introduction to Professional Programming"? Was it good? Would you suggest it to an intermediate C programmer? I was previously reading "The C Programming Language: A Modern Approach" but found that it wasn't suited for me.

Hi guys! I have the following code in C. m = n; format++; n += parse_subsequence(&format, args); if (n < m) return (-1); How can I pass the address of format and simultaneously increment it? Pseudo code: m = n; n += parse_subsequence(&++format, args); if (n < m) return (-1);

Hi guys! I have the following code in C. m = n; format++; n += parse_subsequence(&format, args); if (n < m) return (-1); How can I pass the address of format and simultaneously increment it? Pseudo code: m = n; n += parse_subsequence(&++format, args); if (n < m) return (-1);

#include<iostream> using namespace std; void update(int *a,int *b) { *a=(*a)+(*b); cout<<*a<<endl; if(*a>*b) { *b=(*a)-(*b); cout<<*b<<endl; } else {*b=(*b)-(*a); cout<<*b<<endl; } } int main() { int a,b; cin>>a>>b; cout<<update(&a,&b); return 0; }

Hi guys! I have the following code in C. m = n; format++; n += parse_subsequence(&format, args); if (n < m) return (-1); How can I pass the address of format and simultaneously increment it? Pseudo code: m = n; n += parse_subsequence(&++format, args); if (n < m) return (-1);

&format++ maybe ? Eh, just put format++; in following line .. more readable anyway.

No. This is UB. post increment operator on ints returns a temp and you are passing the address of this temp variable (which will be destroyed at the end of the expression) to a function.

UB?

I see, its an (output variable) .. so function might change it

Irrespective of whether you change it or not, it is still Undefined Behavior. Even if you just read the value it is UB.

Did you try your pseudocode? It would work.

Ah because its not used after?

It is because the pointer is an invalid pointer

I tried it and it gives me an error: P.S. Sorry, I should have mentioned it earlier, parse_subsequence is prototyped like this: int parse_subsequence(const char **format, va_list args) Error: ft_printf.c:91:27: error: cannot take the address of an rvalue of type 'const char *' n += parse_subsequence(&++format, args);

What is format?

Why u dont write this: format++; Subsequent (&format,...);

Does &(++format) work?

You can, but it's hard

Why do you want to do that?

Qt framework has the ability to add style css How to do this in c ++ without the help of qt Please, if anyone knows, help me