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 ...
0
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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
66 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
555 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
326 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
401 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 ...
1
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0answers
92 views

Testing abstract class' behavior

I'm currently refactoring an existing design, which was created without TDD. There is a class hierarchy with one abstract base class and two subclasses. In the original design, these classes were ...
1
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0answers
88 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
143 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 ...
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0answers
36 views

Linear Algebra Api for c++ using external memory

I need to perform Linear Algebra operations on Large size vectors and matrices which might or might not be sparse. Operations better include LU Factorization for matrices in addition to the basic ...
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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 ...
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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 ...