I have a large text file of 9000 rows. The first column contains names and my python code looks up a string in this column to get the entire row. The string comes from another textfile.
Is it better to read in the data once and store it in memory or is it better to open the file every time I do ...
This is actually a second follow-up to Correct MVVM format, but I have made different changes.
This is my ViewModel.cs class for my MainPage.xaml:
public partial class ViewModel : INotifyPropertyChanged
{
private ObservableCollection<MenuItem> _back = new ObservableCollection<MenuItem>();...
This is an incomplete implementation of something similar to scratch. It's incomplete because right now, i'm working purely on the user interface.
I used swing to make the basics of it, but then hacked my own code for the rest of it, because I wasn't sure if Swing could give me what I wanted. B...
The goal is to block all threads that call WaitOne(). When Set() is called, those threads continue. Any calls to WaitOne(), after Set(), return immediately. The challenge is to make sure that all calls to WaitOne() are either "before" or "after" the call to Set(), so that no threads see _state fa...
I have a listbox where I bind the ItemsSource to a collection stored in the set DataContext object. This makes the list displayed using the ToString() function.
<ListBox ItemsSource="{Binding SomeCollection}"></ListBox>
Now I want to display a property for the objects in the collection instea...
I have a script that contains two shell functions
runhaskells() {
local DIR=$PWD
local TARGET="cabal.sandbox.config"
while [ ! -e $DIR/$TARGET -a $DIR != "/" ]; do
DIR=$(dirname $DIR)
done
if test $DIR != "/"; then
local DB=$(sed -ne '/^package-db: */{s///p;q;...
I've a code and I guess I made everything right. Can anyone tell me why it's not working? Even it says error C2065: 'a' : undeclared identifier and many errors (total 102) like that. I've declared them like a=0.
What's wrong with it?
PS: explanatory sentences are written in my local language do...
Question:
You are given an array A of integers of size N. You will be given Q queries where each query is represented by two integers L, R. You have to find the gcd(Greatest Common Divisor) of the array after excluding the part from range L to R inclusive N ≤ 10^6, 1 ≤ Q ≤ N,
My approach: Calcu...
The lack of curly braces here has a potential for errors:
if (argc < 2)
/*TODO daemon */
cout << "Starting server\n";
else
for(int i=1; i<argc; i++)
if (!strcmp(argv[i], "-s"))
shell();
else if (!strcmp(argv[i], "-s"))
exit(0);
else
...
So this is the first time I post here so correct me if I missed something. Currently I am building simple Store Management System and I have 4 classes, 3 of which are for Product,Vendor and Orders. The last one is my main class where the actual GUI is built. On it i have 800 lines of different fu...
I've been looking for a workaround to the problem of type-erasing a std::packaged_task using std::function.
What I wanted to do was something like this:
#include <future>
#include <functional>
#include <iostream>
namespace {
std::function<void()> task;
std::future<int> make(int val) {
...
I've been wanting to leave my thoughts on this matter for a while now. It's been difficult for me to articulate my feelings about this, but I'm going to try.
Is this a problem at all?
Yes. I believe it is a problem, albeit not an earth shattering "this will ruin the site problem" it is a p...
To me it looks pretty readable
To me it doesn't.
Bugs:
The following method calls all incorrectly print 0:
System.out.println(min(3, 2, 2));
System.out.println(min(3, 3, 3));
System.out.println(min(1, 3, 3));
System.out.println(min(4, 2, 4));
This is because, when taking a look at you...
Your randomness for calculating the last postfixes is not regular.... there are very slight deviations
(Note update on the doubling of daggers at the end though... that's not 'slight').
Let's do a couple of things here. Firstly, rename them:
postfixes1 -> concepts:
private static String[] con...
Not going to review this code just yet, but I've found a funny bug, by adding a 3rd player:
static void Main(string[] args)
{
var game = new Game();
var players = new[]
{
new ConsolePlayer("Player1", Game.StartAssets),
new ConsolePlayer("Pla...
I wrote a PHP program to solve N queens puzzle. But I have no idea how to get the fundamental answers from all answers. For example: if N=7, then all=40,fundamental=6.
How to remove the symmetrical boards?
<?php
/**
* Eight Queens Puzzle in PHP by zairwolf
*
* Demo: http://www.you4be.com/...
I am trying to implement a thread safe STL vector without mutexes. So I followed through this post and implemented a wrapper for the atomic primitives.
However when I ran the code below, it displayed out Failed!twice from the below code (only two instances of race conditions) so it doesn't seem...
They say you cannot get out of the monad, but I need to use the result (at least for assertions / unit tests). But print how does it do it?
Otherwise, I worked very hard for the next code with my new limited Haskell abilities (especially when talking about monads), so it needs a review.
--impo...
I'd just like this PyQt5 code reviewed. I'm relatively new to classes and GUI programming, and wanted to make sure I wasn't doing anything too bad. If absolutely necessary, I can give you the other stuff I've created that this program uses.
import sys
from PyQt5 import QtCore, QtWidgets, QtGui,...
Often I need to use objects of some type which can be obtained in different ways.
For example, list of strings. Strings can be loaded from resources (i.e. using resource id and a Context\Resources instance), or downloaded from the Internet, or simply hard-coded.
Another example is images. You ...I'm sure this is a fully 'solved' problem and expecting cross references but I can't find this on Google. I'm probably missing a keyword.
Here is a naive function for populating a boolean array in a Bernoulli distribution.
P(b==true)==p and P(b==false)==(1-p) for each independent random variable...
This solution was used to synchronize events between two applications: An eye tracking software, python, and a stimulus control software, object free pascal/delphi.
I tried to avoid a rewrite of the stimulus control app from objfpc/delphi to python. Hence, I was happy when I found that zeromq al...
I'm currently working on a schoolproject that will parse text files that contains different instruction of how to move. These instructions are then placed out in a tree structure that always bransch to the right with an new instruction and to the left with how much each instruction can go.
It wi...
I'm writing a class called TextRenderer to render text with OpenGL. Here's my header file:
class TextRenderer
{
public:
void renderText(std::string text, int x, int y);
private:
void setup();
GLuint program;
};
Notice how I have a private GLuint, program.
To do this I have to #incl...
I have a XML like below which is stored as a String in xmlData variable and I need to pass this String to my url in client_data variable and then execute the url -
<?xml version="1.0"?>
<ClientData
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://www.google.com ...
