I'm supposed to build and implement a phone book that uses an array-based hash table as the underlying structure and chaining to handle collisions with the following classes : Phonebook Demo, Phonebook, Hash, Linked List, and Node. My teacher is also supposed to be able to change the default size...

I am using a library that specifically needs me to provide arguments as strings one by one. However, different combinations are possible. Right now I am using a bunch of elif: def get_all_users(times=False, groups=False, ips=False): """Get a list of all users online""" if times and group...

I have a question about when its safe to handle an aggregate exception when using WhenAll(). It seems like the natural place would be inside the catch block, because if the catch block never fires, it would imply there are no exceptions to handle. But I see a lot of code that has an empty catch b...

I have a series of Click CLI Python scripts each built using same/similar code patterns. One important pattern for dynamically handling different kinds of files has a serious flaw. I've modified this Dispatcher Pattern. My version loads Python files in a subdirectory (plugins) which are loaded at...

Here is a sample code i wrote. This results only the first line and then quits the browser. `import selenium from selenium import webdriver from selenium.webdriver.common.keys import Keys import time url = "https://web.whatsapp.com/" driver = webdriver.Chrome('c:/users/user/desktop/tcs/c...

I have a class which parses a .csv file and converts it into successful rows and errors. Currently I have 12 different kind of errors (mail is not valid, missing column x, row is duplicate etc.). Each error has a custom message. I also need to know in other classes what kind of error a row was, ...

I'm doing a application to work with PDF and TIFF files. To divide them, the user opens the file or folder (if it is a folder, it gets all the files inside) and the app splits the file, getting a tiny image (thumbnail) in JPG format. Then it creates a ListViewItem adding the thumbnail, the name a...

I would like to double check with native English speakers whether the following code is clear. I can't find good names for user account states. public class User { public enum State { /* How to express in English that the registration is ongoing? */ REGISTRATION_ONGOING, /* How ...

I have a structure which looks like Person ID int Name nvarchar Phone ID int PersonId int Number nvarchar Make nvarchar Model nvarchar DualSim bit One person can have many Phones At the moment, the logic I have is when ever the user clicks the save button...

I'm going through the "Programming in Haskell" book (second edition) and noticed that the "game of life" example is getting extremely slow after some iterations (it looks like it's getting exponentially slower with every iteration). I profiled it, but can't see anything suspicious in the prof fil...

I'm using IDBCommand for my database layer in order to switch to other database providers than SqlDataProvider. SqlCommand has all Async methods like ExecuteNonQueryAsync but IDBCommand does not contains async method. In future we might need to switch to another data provider other than Sql, I...

I sent an application on a C++ position in one of IT companies. They sent me a test assignment. The task is to implement an interval map assignment operation. I sent them my solution, but it did not pass the second requirement (correct behavior). They did not give a feedback more than stating th...

I am designing an interface between JVM and a device that accepts command sequences (a series of bytes) over a secure shell channel. For the purpose of simplicity, there are fields fieldAlpha fieldBeta ... fieldn that I can get and set on this device. My initial design to get the ball ro...

If I have a chain of method calls in Python, how do I extract the top level calls in a neat way? I have working code below. Tldr; the function should behave thusly: _parse_commands("df.hi()['fi'](__call__).NI(ni='NI!')") ['df', '.hi()', "['fi']", '(__call__)', ".NI(ni='NI!')"] I have this mon...

This is the problem: You notice that the device repeats the same frequency change list over and over. To calibrate the device, you need to find the first frequency it reaches twice. For example, using the same list of changes above, the device would loop as follows: - Current f...

I have a vba code which takes data from SQL database and dumps it into excel. I see that my query should extract approximately total of 120k records. I monitored this activity and learnt that even after 8 hours of my office time, the query is successful in extracting barely 70k records. This is ...

I wrote a solution to a problem based on the N-Queens problem which should use more pieces than just queens. Problem is it's very slow, it probably has to do with how I modeled data and my lack of knowledge on how to compare boards without the possibility of extending from an interface compareTo ...

I've to calculate 50% of value. So I approach it using two ways. 1) public static void main(String[] args) { new Double(500) / 100 * 50); } 2) public static void main(String[] args) { new BigDecimal(500).divide(new BigDecimal(100).multiply(new BigDecimal(50))); } So whi...

I was try to do the native implementation of call method in javascript. Here we need to handle the object which we pass in the call function and additional params. i handle the additional params using eval() method. is there any efficient way to do the native call() function implementation. here ...

I'm doing a code review and I see a few places where the author has done this: if (SUCCESS(a = foo())) { // do something... } else { // do something else... } where foo() and SUCCESS(x) are defined as shown below: bool bar(x) {} #define SUCCESS(x) bar(x) uint32_t foo() {} While th...

My programs that I have written so far included only a few lines of source code. When I tried to write larger programs, it usually failed because I'm not a master of software engineering. This time, I want to play it safe and publish now from time to time parts of the program, which should be my ...

import time import itertools def displayMenu(): userOption = input(''' {a}* Enter RLE {b}* Convert to ASCII art {c}* Read from ASCII art text file {d}* Calculate difference between 2 lines {e}* Quit Please type 1 2 3 4 or 5 for your option '''.format(a = 1, b = 2, c = 3, d = 4, e = 5 )...

Assumptions for use: push() will only ever be called by a single thread. pop() will only ever be called by a single thread. Requirements: push() needs to be as fast as possible. Requirements are stringent enough that I've determined that I can't use std::mutex (at least not in any way I've a...

I'm a crop scientist and am currently building a web app that collects weather data then generates and displays modeled agriculturally relevant output. My question centers around an increasingly complex Django view and a desire to learn about a potentially superior implementation if one exists. ...

I have some long-time method (PrintInfo). I need to know total steps of that method and track completed parts. How to reuse same filtered query in: TotalSteps (ex, Program: progressMonitor.TotalSteps = /* ... */) method PrintInfo? Description of example: . I have BookLibrary with some hie...

This is a very bare bones program where a population of blocks learn to reach a target on a 2d screen (My attempt at making a smart rockets program) I've only used python for 2 weeks so i'm positive certain aspects of the program have extraneous lines of code and unnecessary junk, so what are so...

I have started to learn Python 3.7 one month ago Now I am trying to learn class and OOP, I am trying different ways to solve problems. The first code below can be solved without class. My point is understanding class.( sorry for my nad English) Please critique and correct the code. I appriciate ...

I implemented cubic spline interpolation as a Python class. Following the best practices, I protected my code with tests (I preferred doctest for this example). In this way, we are good to refactor now. Could you please help my to improve the quality of the code? You may just share your overall...

I am using jQuery data Tables server processing to show some data to user. The documentation instructs that the response that the server sends must have this data: recordsTotal recordsFiltered data when I am trying to provide this data, I have to query the database 3 times! One for total docu...

I'm trying to implement safe routes and checking if the user is authorized using only Context API. Considering the safety only in the front end, is this safe? What would be unsafe is the user being able to see a PrivateRoute (doing anything that is possible in the browser). I made a gist but al...