Questions about C++, a statically typed, free-form, multi-paradigm, compiled, general-purpose programming language.

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2answers
117 views

How to manage focus for a small set of simple widgets

I'm developing a set of simple widgets for a small (128x128) display. For example I'd like to have a main screen with an overlay menu which I can use to toggle visibilty of main screen elements. Each ...
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2answers
149 views

Application qos involving priority and bandwidth

Our manager wants us to do applicaiton qos which is quite different from the well-known system qos. We have many services of three types, they have priorites, the manager wants to suspend low priority ...
2
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1answer
198 views

Why function returning by Address can not be a Lvalue?

Why it is not possible to make it LValue if a function return by address (while possible in case of reference)? int* returnByAdress() { int x =20; return &x; } int& ...
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1answer
67 views

Interface questions for using Command Pattern and Dependency Injection together

I have many projects that have essentially the same high level requirement: test all hardware on a device. Each device can have a different communication protocol, requires different test equipment to ...
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1answer
557 views

Is this proper OO design for C++?

I recently took a software processes course and this is my first time attempting OO design on my own. I am trying to follow OO design principles and C++ conventions. I attempted and gave up on MVC for ...
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1answer
330 views

Good practice using signals and event driven system

I am using signals (specifically Boost signals2) to create an event driven protocol API and model. Most elements have their own signals, and there are usually multiple of each element. Consider a ...
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1answer
210 views

What data structure is suitable for implementing dynamic huffman encoding and decoding on a piece of text?

Some pseudo code or resources will be appreciated.I was thinking if implementing it in form of a BST stored in an array. However,not all operations can be performed easily using this approach. I am ...
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1answer
66 views

Optimal movie schedule

Let's say Mr. A goes to cinema and he gets a movie schedule. There are N movies on the program today (1 < N < 50) and for every movie the time of the start and the time of the end are given in ...
-1
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1answer
402 views

How to move a car around an environment with hills in C++?

I don't have any code for this since I don't know how I am meant to do this. I have a car and I am able to move it around on a flat plane and I have that working correctly. However, I want it to also ...
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0answers
89 views

How to extract the active code path from a complex algorithm

I have been puzzled lately by an intruiging idea. I wonder if there is a (known) method to extract the executed source code from a large complex algorithm. I will try to elaborate this question: ...
1
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0answers
145 views

Binary Tree/Knowledge Base design C++

Currently I have a binary tree template setup where my main is using it with strings to make a question/answer game. I'm using a knowledge base that works as an interface to the binary tree that main ...
1
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0answers
117 views

How to organize points on a sphere in bins and navigate between bins?

I'm having trouble coming up with a suitable way to navigate through a set of star coordinates in the Equatorial Coordinate System. My goal is to display those which are within a given range of ...
1
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0answers
65 views

R* Tree work with dynamic data

I'm searching an algorithm to store my data (which are moving objects' coordinates) and allow me to query objects within a specific radius of a specific point. I came up with R* Tree which is said as ...
1
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0answers
71 views

Representation of time expanded graph

I want to build a time expanded graph with time discretization Dt that starts at t = 0 and ends at t = T where between the node (n1, t) and the node (n2, t') is an arc if and only if (n1, n2) were ...
1
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0answers
71 views

Let Cpython stream commands with IPC

I'm no expert in the Cpython internals, and with Cpython I mean the interpreter that is usually found inside applications that offer a python interpreter, the "classic" python interpreter; Now I was ...
0
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0answers
20 views

Offload traces into shared memory

There is a task to trace thread execution activity for posthumous analysis with minimum impact on latency/performance. Stack trace might be not enough to understand the reason of crash. Initially I ...
0
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0answers
181 views

Creating a custom GUI. App/DE/WM?

I am starting with this project of mine of writing a custom UI for linux. What would happen is: The computer would boot into this UI which would not be the typical taskbar/icons/startbutton kind of ...