I'm trying to make a simple header only C++ library for interval arithmetic as a programming exercise. https://en.wikipedia.org/wiki/Interval_arithmetic
There are some subtle aspects of interval arithmetic (like floating point rounding mode) that I am deliberately ignoring for now.
Eventually I...
I have a mesh generation script which initialises a mesh with vertices that represent my map tiles as quads.
Then I pass the tiles that i wish to display on the mesh by setting my triangles for the vertices related to the tile.
I was wondering if there is a more optimised way to approach this f...
Problem statement
Given a binary tree, traversal the binary tree using inorder traversal, so the left child is visited first, and then node and then right child. Write an iterative solution as a practice of depth first search.
Algorithm
I like to practice the iterative solution of binary ...
I am using WPF with Entity Framework 6 (DB first), Caliburn.Micro, and MEF.
I am trying to implement IoC in my project. I am an absolute beginner in IoC, and unfortunately, I cant find too many examples where MEF is used with Repository Pattern. Here is what I have till now:
All the generated e...
So my first 'large' project is to create an organizational tool. Right now, it's pretty basic, but nevertheless functional in terms of the intent of the current release (v0.3.0).
My main question is: 'Is what I'm doing procedurally correct/is this the way I should be designing my GUI?'. This is ...
What I needed to do was check whether a given string matches a certain pattern. The pattern is this:
00:00:00,000 --> 00:00:00,000
Things to keep in mind:
The 0s can be numbers from 0 to 9.
The pattern must be alone in a single line; the line has to only consist of the pattern.
I came up wi...
VBA has a built-in functions for repeating a single character:
Function String$(Number As Long, Character) As String
Function Space$(Number As Long) As String
But neither are of any use when you need to repeat a string that has more than one character.
You could repeat a string "abcde...
I have number of classes that parses String. These Strings are sent by LAS (Laboratory Automation System) machines after performing sample's tests and then parser classes are responsible to parse them and extract results from String.
As every machine sends String in different formats, so can't h...
I have this batch file using ffmpeg to add a logo to my videos and then add an intro but it's taking anywhere from 10 hours to a day depending on how many I have to watermark, is there a more efficient way to achieve this? The videos sometimes have different resolutions so I can't remove the conv...
A friend and I at IT school tasked ourselves with writing something just for the hell of it. Trying to simulate in a very basic way something that you may want to do in the real world. We thought of the following problem that we could solve ourselves.
X, Y and X INC is in need of a program. They...
I'm trying to read a serial port data from a controller and plot it using chart. I could read the data from the controller and see the data in a textbox earlier. Now I'm trying to use a chart along with the textbox. There are complication when I'm trying to use both together. I get an exception b...
A controller based on flask pluggable view. the base controller is made as parent for the routing controller. the goal of this BaseController is to make my routing controller become OOP.
base_controller.py
from flask import g
from flask.views import View
class BaseController(View):
"""Bas...
I would like that this code would now be done in a faster way:
Sub TechMapping()
Set mappingWB = Workbooks.Open(Filename:="path\workbook1.xlsx")
Sheets("Sheet1").Activate
Dim Lookup_Range As Range
Set Lookup_Range = Range("A2:P1779")
Workbooks("workbook2.xlsb").Activate
...
I intend to convert strings that are UTC timestamps into a date format, say day + date number (e.g. 'Mon 27'). My current solution is:
Parse the UTC timestamp into a date object using d3.utcParse("%Y-%m-%dT%H:%M:%S")
Convert the date object into a timestamp without hours (i.e. just the date inf...
I have a software that does the following in sequence:
download text files from s3
reads the files
collect the data from files
The program is asynchronous-synchronous - each phase is asynchronous, but it heavily depends on the output of the previous phase, so i'm using Promises for build the c...
I'm currently working through "Algorithms in java" by Robert Sedgewick (3rd edition, german version) on my own and am trying to solve one of the exercises there.
The exercise asked to create an int[][] 2D array with 2^n rows in which each row stores the binary representation of its own index, b...
I'm currently learning ADO.NET and I've written a small auto updater to move data automatically between a class and a datarow.
General usage would be to create a class and mark the DataRow and DataFields with attributes and use UpdateDataRow() and UpdateProperties() on the object.
class MyObj...
(See the previous iteration.)
Now all operations of the data structure work in exact constant time, yet it came with the price: the state of this set maybe non-sensical. A user may end up with the set with negative number of elements in it. Basically, the client programmer must keep track of how...
How to program in python to let the user type in 3 numbers and display the numbers in order starting from the smallest to largest in a line
I've recently solved the LeetCode's "Same Tree" problem:
Given two binary trees, write a function to check if they are equal or
not.
Two binary trees are considered equal if they are structurally
identical and the nodes have the same value.
The problem itself and the idea is simple...
I have tried to calculate the minimum distance between the two points in a 2D plane. I have used the divide and conquer strategy to attain the complexity of n logn. The steps that I did are:
Recursively sort a list in X plane and compute the minimum difference between the coordinates sorted by ...
I upgraded my hard drive from HDD to SSD.
There is no change in download speed. Reviewer says SSD has very good write speed, but why does that not increase download speed?
Computer programmers, IT specialists, and hackers are often depicted in popular works of fiction, from books, movies, to TV shows. On the 2017 Developer Survey, we asked respondents about depictions of what it’s really like to be a programmer. This was one of my favorite questions on the survey this year, and analyzing these results has been quite the glimpse into the opinions of our community.
There were 10,983 respondents who answered this question on the survey about fictional characters, and respondents answered one of four possible versions of this question: …
Short answer
When you run strstr($str, 2660) the $needle is resolved to the character "d" by calling chr(2660) and therefore it stops at the first "d" found in the given $str, in this case right at the 11th character.
Why are we calling chr(2660)?
Because when the $needle is not a string strst...
First post so I hope what I post follows the rules.
I have a program. It's a WPF project which uses XAML and C#. It adheres (as best as I know) to the MVVM methodology.
As part of it, I have used a mediator class (the 'Gang of Four' design). You register for callbacks, and other classes can not...
I am studying chemistry in the university, and then I try to write all the things in the textbook with Perl6 or Perl, like balancing the chemical formula or other process!
Then I encountered the problem is on perl6 custom operator.
I feel I have been repeating my code and myself when i use the f...
I have implemented those two methods described as in a) and b)
I appreciate any kind of review to improve my method implementation
a) Implement the method toString.
toString returns a string representation of the list
b) Implement the method remove .
remove removes a given course from the l...
I'm implementing a clone of 2048 in C with SDL, and I have the following function for performing a movement on a column vector/array
/**
* collapseVector: Collapse a vector "2048" style, flush the cells in one direction, joining them if legal.
* @param _vector 1-D array to be collapsed
* @par...I am trying to implement a simple table ADT. My program reads in lines from a file, calculates the hashing index and maps it onto an array index. If the word is already there then i am using separate chaining to avoid collision so i have nodes and what i do next is search the nodes for the word, ...
Problem
Problem is Maximum sum path from https://firecode.io
Given a binary tree, \$T\$, whose nodes have positive values find the value of a maximal path. A path is a simple path from a node to another node. The value of a path \$P\$ is
$$val(P) = \sum\limits_{u \in P} val(u)$$
that is, the ...
I've been working with web services recently, and I keep copying the same stuff to set up Unity for dependency injection, so I thought I'd extract the common stuff into a library. Here's the main file:
public static class UnityConfig
{
public static IUnityContainer Register(System.Web.Http.H...
I am developing my first website in Flask using PostgreSQL and I want my database to have professors from all universities and courses in the USA.
As I am not very familiar with databases I have experienced some issues with my database model design.
Basically, I want to have a Professor model, ...
Can anyone explain to me like you're explaining to a stupid person(which you are :P) what this bit of for loop is doing ?
for (int i = n + 1; true; i++)
{
String number = String.valueOf(Math.abs(i));
int count = 0;
for (int j = 0; j < number....
I think I have pretty much the best code you can get when it comes to this particular task, but I'm always open to improvement. This code will check everything I can think of to make sure that it will actually work and if it is an isosceles triangle. It will make sure that none of the sides are 0...
I want to select top N related products using GetTopRelatedProducts method.
class Product
{
public string Name;
public double Rating;
public List<Product> RelatedProducts;
public List<Product> GetTopRelatedProducts(int N)
{
var relate...
Intro
Django version: 1.10
Python version: 3.5.2
I'm trying to implement an authentication based on a LDAP condition and I can't get my head around on how to achieve this.
My project already uses Django's built-in authentication system, which works great and looks like this:
# urls.py
from...
I am trying to implement design pattern in my project and have been reading material over net.
we have a sales application ( in C# ) where in we are storing entities like
Customer
Contacts
Sales Order
Lead
Opportunity
This is how i am planning to implement design pattern.
Entity would be t...
This might be a simple issue that I am over complicating, but I've spent quite some time reading about polygon scaling and I've come to the conclusion that it is not precisely what I need.
Given a set of (x, y) coordinates for N points (shown in blue) I need the new set of coordinates that resul...
This is an O(n sqrt(n)) solution to the the following problem:
Given a sequence, compute the number of non-empty increasing subsequences
The algorithm is to compute g(i) = # of increasing subsequences that end at index i using dynamic programming, and then sum over i. A full description of ...
How do i refactor my code to fix the lint error i am getting?
def value=(val)
if val
if [:char].include?(@type) && val.length >= args[:limit] && val == 'true'
val = 'Y'
elsif [:char].include?(@type) && val.length >= args[:limit] && val == 'false'
val = 'N'
...
I am working with javafx making a simple Kings game. I am currently in a Java course at school and this is just a side project I am looking to get some feedback on.
Main.java
package application;
import javafx.application.Application;
import javafx.fxml.FXMLLoader;
import javafx.stage.Stage;
i...
Do you see anything you'd do differently?
'''
Dynamic Facebook Ads
Convert HomeNet feed into Facebook compatible .csv
'''
import csv
def convert(input_file_name, output_file_name):
''' Convert input to compatible Facebook Product Feed '''
fieldnames = ['id', 'availability', 'condition'...
Below is my bash script to setup a proxy, I am by no means an expert in bash. I suspect there is a better way to write this, any tips would be appreciated.
Is there a better way to do nested while-loops and if-statements?
#Set Proxy
shopt -s nocasematch
while true;
do
read -r -p "`echo $'\n '...
