I came across a nice video on 3Blue1Brown's channel that highlights a very indirect way to find the digits in Pi. I'd suggest watching the whole video, but briefly:
The setup is as above. A "small" body of unit mass is at rest on the left and a "large" body on the right is moving towards the l...
I need some diagnosis on how I'm solving my differential equation. This was a template given to me by my professor and I manipulated it to the best of my ability.
The governing equations are here:
And here is my code:
clear;
clc;
close all;
% u,,xx=-(f/ea) on [0,L]
% u,x...
I'm looking for any possible help implementing the unix command echo in Rust. This is what I have so far but it's just basic functionality. I also need to implement the -n flag and -e flag that can handle the newline, tab, and backslash escapes. For all others it should panic.
use std::env;
fn ...
I want to get two distinct sets of schema from a database without having to create multiple Connection/PreparedStatement/ResultSet objects.
Currently, I have a helper method that queries the database, gets each individual schema, and then returns them together in one ArrayList - please refer to ...
Now, there is a company list in which element is employee list in every company. I calculate the salary of employee in every company with restful API one by one, this is very slow. So I join 1000 element to one list and post it to the service. My code is as follows.
import requests
def _calcul...
!["I [suspect] that we are throwing more and more of our resources, including the cream of our youth, into financial activities remote from the production of goods and services, into activities that generate high private rewards disproportionate to their social productivity. I suspect that the immense power of the computer is being harnessed to this 'paper economy', not to do the same transactions more economically but to balloon the quantity and variety of financial exchanges." --James Tobin, July 1984](https://imgs.xkcd.com/comics/technical_analysis.png "\"I [suspect] that we are throwing more and more of our resources, including the cream of our youth, into financial activities remote from the production of goods and services, into activities that generate high private rewards disproportionate to their social productivity. I suspect that the immense power of the computer is being harnessed to this 'paper economy', not to do the same transactions more economically but to balloon the quantity and variety of financial exchanges.\" --James Tobin, July 1984")
First post. I'm trying to code a game of Hangman in Python 3, but I have a problem. When the user guesses a letter correctly, it only gets one of the occurrences in the word, instead of all of them. How do I improve this?
import random
def GAME():
win = 0
guessedletters = []
display ...
Imagine that there is a certain object, that could have different options applied to it. And each option has it's own properties.
Like a car, that could have a protective window installed, with or without red strips on it. Or a cocktail with straw that could have different length.
I created a p...
Many times, I have a loop running and I want to write the loop results to a single file. I know this will work
with open(filename, 'a') as f:
for i in range(1000000):
f.write('s\n')
However, as far as I understand it, I will only see the result in file filename after the file is cl...
I have substantially revised my earlier implementation, it now seems to be competitive with the standard C# ZLib implementation, increasing compression while being faster for moderate length inputs, and slightly slower for large inputs ( data dependent ) - see long initial comment below for detai...
def go():
print("Login successful")
username=[]
password=[]
while True:
choice=input("Enter 'l' for login and 's' for Signup.\n")
if choice=="l":
user_name=input("Enter your username\n")
pass_word=input("Enter your password\n")
if user_name in username and pass_word in p...
I'm writing a program that adds all network interfaces with multiple parameters to a list.
I have written the following code, which should work out of the box on any Linux system with Python and ethtool installed:
import imp
import os
import subprocess
import re
from enum import Enum
class ...
I am rendering a list from an array of objects. I want to check the correctness of the array before rendering. For that I am using typeof and null.
In real situation the list comes from the API.
Is it the correct way? and is there any better way to do it?
const activeEvents = [{
id: '1'...
I recently wrote a full implementation of a range() operator in Python, and I'm not sure if I've followed the standard pythonic patterns. From what I can tell, it works. I've written a few test cases, but they don't cover everything yet. I've also published this in a gist on github as well
This ...
why you dont use "bits/stdc++.h"
I think it is better.
I've written a method to render a polygon in C# using the SharpDX libraries and would like a review of my code's maintainability and the documentation around it. The method works fine as is, but I feel that perhaps the documentation could be improved, or that there could be simpler and more maint...
I'm trying to parse data into a csv prior to a bulk transaction into Neo4j. I'm using vast amounts of data in the relationships and wondered if anyone could help in speeding up the transactions below. It's genomic data, with 2,000 samples, each with up to 3.5m variants per chromosome probably e...
I've got an xml file with some info about hosts connected to my home network and I would like to create objects containing that info in a neat way. So that I can make some nice front-end application with that data later on.
This is how I do it:
Loading the xml
Encoding it into json
Making an a...
I've seen tutorials of Unit Testing and I've never seen IEnumerable<T> as an argument. Many authors use Repository pattern and services and there is no need to pass collections between the methods.
However, my signature of method looks like this:
private IEnumerable<Answer> GetPlayerAnswers(IE...
I wrote a (max) heap in Haskell was is balanced after every (public) operation. Not based on any documentation. Focus is on:
speed, that is the right time-complexities (not necessarily optimal);
easy to understand, so no Maybe's, Monads or symbols a beginner is unfamiliar with.
****...
An Isogram (also known as a "nonpattern word") is a word or phrase without a repeating letter, however spaces and hyphens are allowed to appear multiple times.
IsIsogram() method takes a string and returns boolean value.
INPUT: anik OUTPUT: true
INPUT: A nika OUTPUT: false
Approach ...
I am writing a vb script on excel below is my problem.
I have more than 20 sheets in excel and one main sheet (All Programs with 200 names). Each sheet has column with Names and 24months(Jan18 to Dec18, Jan19 to Dec20). Each sheet names is subset of main sheet
Main sheet(All Programs) has 200 N...
I have created an extension method for the Vector2 type available in the SharpDX libraries. The purpose of this method is to determin if a specified point is occluded from the camera's view and thus is named IsOccluded. Since extension methods are static methods with an additional way to call the...
As if this isn't extremely obvious, I am a new coder.
My code words, but is quite far from what I think should be the most ideal representation. I'm also not sure if there are unnecessary bits, since I've been trying to get this to work for a few days on and off, so I've started and stopped mul...I have an object for which I have created five constructors, each with an increasing number of parameters. Since each subsequent constructor adds to what the previous offered, is it acceptable (from a readability and maintenance standpoint) to call the prior constructor, essentially daisy-chainin...
This solution surpassed 100% of submissions for efficiency! My method was to recursively check surrounding values and change any contiguous "land" to "water". Is there a better way to write what I wrote?
Given a 2d grid map of '1's (land) and '0's (water), count the number of islands. An isla...
