I have time series data (t) that I want to loop through each t and take the difference of the previous five lags.
This code works, but seems overkill. I'm not sure how to increase the performance and efficiency of the code.
Sample data
import pandas as pd
import numpy.random as nr
dat = pd...
Wrote some code to install bootstrap (latest) in a newly created rails application.
update: fixed a typo
yarn add bootstrap jquery popper.js expose-loader
yarn install --check-files
perl -pi.bak -e "s/extract_css: false/extract_css: true/" config/webpacker.yml
s1=$'\n\nimport "bootstrap/dist/js...
Let's take the famous fibonacci problem as an example but this is a generic problem. Also, taking scala as the language as it's rahter feature-rich. I want to know which solution you'd prefer.
we all know that the following implementation is evil as it's not stack-safe:
//bad!
def NaiveFib(n: ...
I wanted to get feedback on the correctness and efficiency of this post order traversal routine that both me and my wife find really easy to grasp.
def postOrderTraversal(root: TreeNode):
curr = root
stack = []
while stack or curr:
if curr is None:
if stack[-1].right is None or ...
I'm doing a project of mine and I have trouble looping the trials. It should be when you guessed the number right it will display the number of tries and the program will loop again to the start. Can someone help me. I'm just a newbie in java so please understand.
Here's my code:
import java.ut...
Very simple, yet stressfull task to perform for me apparently; I have two planes defined by the following set of \$3-\$dimensional points
\$
L_1=\{(x,y,z)\in\mathbb{R}^3\;\text{s.t.}\;x-y+2z=3\}
\$
and
\$
L_2=\{(x, y, z)\;\text{s.t.}\; 10z-y=12\}
\$
I want to plot them to show that they inter...
I want to parse a String to a Case class. The valid format is {int}_{int}
I don't like to use Try as the return type for a function. Why?
The main reason for this is that I try to avoid to use native Java
classes and especially Throwable.
Exceptions are for exceptional
cases. :)
I usually u...
Here is my first project : I have made a double pendulum animation with tkinter on Python. Can you give me some feedback on what can be improved ?
Thanks !
Code :
# General imports
import tkinter as tk
import random
import math as m
# Parameters
G = 9.81
class Pendulum():
def __init__(s...
I am less familiar with the evolution of PHP than with that of javascript, css etc. so when I see (long-stated, albeit from the late 2000s and early 2010s) recommendations like:
Avoid preg_replace unless you need to use it and always use
str_replace instead, which is an order of magnitude f...
So I'm writing a big server and I've made a simple start on console commands. I'm not sure if the way I'm doing it in is correct so I'd like to have it reviewed.
I have a class called ServiceCollectionExtensions where extension methods are defined that can be used on ServiceCollection. In there ...
