sohang3112

from urllib.parse import urlparse, parse_qs

safe_url = 'https://apc01.safelinks.protection.outlook.com/?url=https%3A%2F%2Foneconnect.hcltech.com%2Fnav_to.do%3Furi%3Dsysapproval_approver.do%253Fsys_id%3Dca1525483b4e32101de91624c3e45a99%2526sysparm_record_target%253dsysapproval_approver%2526sysparm_stack%3Dsysapproval_approver_list.do%253Fsysparm_query%3Dsys_created_on%253ejavascript%253ags.beginningOfToday()&data=05%7C02%7Csohang.chopra%40hcltech.com%7Cd4ac502f649d4ea5e89608de407bc9c7%7C189de737c93a4f5a8b686f4ca9941912%7C0%7C0%7C639019097585714357%7CUnknown%7CTWFpbGZsb3d8eyJFbXB0eU1hcGkiOnRydWUsIlYiOiIwLjAuMDAwMCIsIlAiOiJXaW4zMiIsIkFOIjoiTWFpbCIsIldUIjoyfQ%3D%3D%7C0%7C%7C%7C&sdata=Neefy3zdm1PRH0raNr9BS3IzBpNqpt7y4EB07D43tzY%3D&reserved=0'
extracted_url = parse_qs(urlparse(safe_url).query)['url'][0]
print('Extracted URL:', extracted_url)
# Extracted URL: https://oneconnect.hcltech.com/nav_to.do?uri=sysapproval_approver.do%3Fsys_id=ca1525483b4e32101de91624c3e45a99%26sysparm_record_target%3dsysapproval_approver%

sohang3112

MathJAX NOTES

Reference: MathJAX Macros table - macros start with \. Github Markdown allows a limited subset of MathJAX and no MathJAX extensions can be used. But in static site generators, extensions can be installed using <script> tag.

Inline expressions are written within $ $, block expressions within $$ $$. Curly Brackets { } are required for grouping multiple symbols where otherwise only a single character/symbol is expected

• eg. after _ (superscript under) and ^ (power/subscript over).

sohang3112

# 'Squash Merge' video by anthonywritescode, this is script shown at timestamp 16:50 :
# https://youtu.be/5_8FTivl8Vs?si=krcdLDevrAC_DLuo&t=1013
# Uses https://github.com/newren/git-filter-repo (python script)

# Explanation: `git cat-file commit COMMIT_ID` shows parent commit id
#    normal commits have 1 parent, merge commits have 2 parents
#    this script simply deletes 1 parent (keeping only parent id of main branch), 
#    converting merge commit into normal (squash) commit

# An impressive example of this script is shown, 

sohang3112

• Generate new GPG key on laptop:

$ gpg --full-generate-key
$ gpg --list-secret-keys --keyid-format=long
$ gpg --armor --export GPG_KEY_ID    # get key id from prev list command - see details in above link

Copy output of last command (gpg armor export). Go to Github > Settings > SSH and GPG Keys > New GPG Key and paste it.

sohang3112

#! /usr/bin/env python3
import os

import fitz  # PyMuPDF
import nbformat

# Source: https://www.reddit.com/r/learnpython/comments/1ji0qwz/comment/mjblesy/?utm_source=share&utm_medium=web3x&utm_name=web3xcss&utm_term=1&utm_content=share_button
def pdf_to_ipynb(pdf_path: os.PathLike, ipynb_path: os.PathLike) -> None:
    """Convert PDF -> Jupyter Notebook .ipynb file."""
    doc = fitz.open(pdf_path)

sohang3112

{-# LANGUAGE BangPatterns #-}

import Data.List (foldl')

-- | Compresses a string by counting consecutive repeating characters.
--
-- Returns a list of tuples where each tuple consists of a character and the
-- number of its consecutive occurrences in the string.
--
-- This function uses 'reverse', 'foldl'' and bang patterns for strict accumulation. 

sohang3112

# Example of forking ziglings repo from CodeBerg to Github
UPSTREAM=https://codeberg.org/ziglings/exercises.git
FORK=git@github.com:sohang3112/ziglings.git   # mk empty Github repo & copy SSH url (as Github doesn't support push with HTTPS)

git clone $UPSTREAM ziglings/   # (optional argument) used custom cloned folder name ziglings/
cd ziglings/                    # go to cloned repo
git remote set-url origin $FORK
git remote add upstream $UPSTREAM
git push

sohang3112

"""Using dict __missing__() to implement DefaultDict."""
from typing import Any, Callable

class DefaultDict(dict):
    """Implementing typing.DefaultDict.
    
    A dict that returns a default value (instead of raising KeyError) when a key is missing.
    
    >>> d = DefaultDict(list, {'a': 1, 'b': 2})
    >>> d['a']  

sohang3112

sohang3112

Problem

git push and git pull hanged (using SSH url).

Investigation

• Enable tracing in git to check what's wrong:

$ GIT_TRACE=1 git push
trace: built-in: git push
trace: run_command: unset GIT_PREFIX; ssh git@github.com 'git-receive-pack '\''sohang3112/machine-learning-practice.git'\'''
trace: start_command: /usr/bin/ssh git@github.com 'git-receive-pack '\''username/repo.git'\'''