Prompted by discussion about SQL injection, I wanted to put a proof of concept forward to get feedback about whether this is in fact safe and protected against SQL injection or other malicious use. For good reference on the subject of constructing a dynamic search with dynamic SQL, I'd probably l...
Working with currencies I am aware it is not good to work with floating point values due to rounding and maintaining precision. Better is to work with integers. Would the following Currency class make sense, where an amount is defined as an instance of Currency and converted to cents.
class Curr...
For some machine learning purpose, I need to work with sequences with different lengths. To be able to process efficiently those sequences, I need to process them in batches of size size_batch. A batch typically has 4 dimensions and I want to convert it to a numpy's ndarray with 4 dimensions. For...
Web-app summary:
I'm a complete beginner in web development and I made a sample web application that can trigger sirens on security cameras located in remote locations. Here's the functionality seen by the user:
Go to website and brought to a landing page with a search bar.
Type in the name of...
I've created a script in python to make proxied requests by picking working proxies from a list of proxies scraped from a free proxy site. The bot traverses few links to parse the urls of the different posts from a website. The script however uses a new working proxy every time it makes a new req...
I have created a function which is used to create a list of named tuples. The tuple which is created is dependent on the format of 'instructions' in which there are 3 different formats. Instructions is just a list of lists. I wanted to improve the readability/maintainability of this function and ...
I am fairly new to coding and decided to test my skills and make a program from scratch on my own. I chose to make a Hangman game, it's pretty straight forward. The code reads a file consisting of ~40,000+ words to choose from when generating a word for the user. The user inputs the number of att...
I'm implementing a STL-like vector with the essential functionalities.
I would like to know what is good in this code and what is bad. In terms of everything (memory usage, functions implementations, naming conventions, etc,...).
The header:
#ifndef BVECTOR_H
#define BVECTOR_H
#include <memory>
I am a beginner in python. I found this problem in the book Automate the Boring Stuff with Python. How can I improve this program using latest version of python.
def generateCollatzSequence(number):
print(str(number) + " ")
while number != 1:
if number % 2 == 0:
numb...
I've written a function that generates an HTML email and fills it with information from a database.
Here is the Email Generator function. It is fairly generic, so that it can be used in a wide variety of email templates.
public interface IMailObject
{
string Subject { get; }
...
Below a function which answers: is there a winner in tic-tac-toe game?
also, there is a self written test suite.
def is_win(field):
# check horizontal
N = len(field)
for i in range(N):
if field[i][0] != 0 and len(set(field[i])) == 1:
return True
vertical ...
A People may have 0 to n delegate People, and any of their delegates may have any number of delegates, and so on.
But what if they set up a loop? We could get stuck in an infinite loop if this happens so we better keep track.
public IEnumerable<People> GetPeopleDelegatesRecursive(People p)
{
...
I want to do async processing of a service bus message and I ended up with this code. I don't know exactly why but I don't like it. it is the right way to proceed?
queueClient.OnMessageAsync(message=>
Task.Factory.StartNew(new Action(()=> ProcessMessage(message))));
the p...
I am learning python and am working through some try and except codes. What is wrong here?
The code aims to convert the input in to an integer unless it is not numeric.
try:
def get_integer(my_var):
try:
x = round(my_var, 0)
return x
except:
...
I am trying to implement Dijkstras algorithm using python using complexity stated in title, could I get some feedback on code style and efficiency.
Thank you
def dijkstra(graph, start):
distances = {vertex:float('inf') for vertex in graph}
pq = []
pq_update = {}
distances[start] = 0
...
I have this Worker classes doing some job
class WorkerOne implements IWorker {
@Override
public doWork(Resource resource){
// do some work
}
}
I want all doWork() methods to be wrapped by the same operation.
Currently it is done by sub-classing Worker classes from abstract cl...
I've done this activity selection piece of code, which is a greedy approach. I need some feedback/suggestions.
import random
import operator
begin = [random.randint(1, 10) for i in range(10)]
end = [x + random.randint(1, 4) for x in begin]
pair = sorted(list(zip(begin, end)), key=operator.item...
For those who are unfamiliar with the game:
https://en.wikipedia.org/wiki/Mastermind_(board_game)
A link to the workbook:
https://github.com/Evanml2030/Excel-Mastermind
Had trouble getting the form and scroll bar to adjust based on the resolution of the monitor that it is inside. It does not...
Below is the code of a command line tool built with python that will download email via IMAP.
Omitted from the code below are 2 important function parse_line and server_login.
parse_line takes a string containing data and returns the email and password from that string as a dictionary.
server_...
I'm a complete beginner, but I'd like to learn how to program.
So I tried the common exercice, aka the multiplication table, but I tried to add little things I learnt recently in order to challenge myself, like functions, tables and pointers even if it's useless here.
The code works well, but I...
Today I was greeted with MR. ROBOT, I wanted to close the prompt but the little x didn't work.
Clicking above the prompt, to the right of the code, did close the prompt however.
For a recent project I needed to store id references to values of pivoted data. Usually, I would use helper columns to store the ids but in this case there could be anywhere from 1 to several hundred pivot values to track.
My solution uses no helper columns. Instead it stores a row-header valu...
So I was reading into the proper way to consume an iterator on this question as well as here and I notices there is no actual proper function for this that clearly explains itself.
Using:
collections.deque(maxlen=0).extend(iterable)
isn't exactly very descriptive whereas making a properly nam...
