How would you simplify/improve the readability of this code? Because even after my attempt to improve the readability I think it still looks messy. private bool INTOP = false; private bool INLEFT = false; private bool INRIGHT = false; private bool INBOTTOM = false; private bool BEYOND = false; private List<DependencyObject> BEYONDDO = new List<DependencyObject>(); … Read more
Challenge Problem Statement – Implement a Queue using two Stacks I implemented dequeue() in O(1) at the cost of enqueue() in O(n) #include <cmath> #include <cstdio> #include <vector> #include <iostream> #include <algorithm> #include <stack> using namespace std; struct Queue{ stack<int> s1,s2; int dequeue(){ int x = s1.top(); s1.pop(); return x; } void peek(){ cout<< s1.top()<<“\n”; … Read more
The following code is my answer for exercise 3-3 in K&R: #include <stdio.h> #include <ctype.h> #define MAXLINE 1000 /* maximum output line size */ int my_getline(char s[], int lim); void expand(char s1[], char s2[]); /* Exercise 3-3. Write a function expand(s1,s2) that expands shorthand notations like a-z in the string s1 into the equivalent complete … Read more
Here is an implementation of the ‘which‘ command which can tell where programs are located. /* SPDX-FileCopyrightText: 2021-2022 John Scott <jscott@posteo.net> * SPDX-License-Identifier: GPL-3.0-or-later */ /* We do not support the obsolete extension where an * omitted directory name is interpreted as the current * working directory. In $PATH = “/usr::/bin:”, the lack * of … Read more
Since I don’t know how LINQ works under the hood, I can’t decide what version is best to use in term of rapidity of execution. I’ve done some testing with my testing data (Point Cloud) but I can’t see a clear difference between the two. The only thing I know is that the real life … Read more
I would like to compile this. program.c #include <libavcodec/avcodec.h> int main(){ int i = avpicture_get_size(AV_PIX_FMT_RGB24,300,300); } Running this gcc -I$HOME/ffmpeg/include program.c gives error /tmp/ccxMLBme.o: In function `main’: program.c:(.text+0x18): undefined reference to `avpicture_get_size’ collect2: ld returned 1 exit status However, avpicture_get_size is defined. Why is this happening? Answer However, avpicture_get_size is defined. No, as the header … Read more
I’m currently writing a data access layer for an application. The access layer makes extensive use of linq classes to return data. Currently in order to reflect data back to the database I’ve added a private data context member and a public save method. The code looks something like this: private DataContext myDb; public static … Read more
Does C have references? i.e. as in C++ : void foo(int &i) Answer No, it doesn’t. It has pointers, but they’re not quite the same thing. In particular, all arguments in C are passed by value, rather than pass-by-reference being available as in C++. Of course, you can sort of simulate pass-by-reference via pointers: void … Read more
I’ve read through LOTS of posts on saving a detached entity in Entity Framework. All of them seem to apply to older versions of Entity Framework. They reference methods such as ApplyCurrentValues and ChangeObjectState which do not seem to exist. On a whim I decided to try a method I found through intellisense and I … Read more
Is there a way in c# to loop over the properties of a class? Basically I have a class that contains a large number of property’s (it basically holds the results of a large database query). I need to output these results as a CSV file so need to append each value to a string. … Read more
