mathcodes

14 Coding Patterns To Master

This is a collection of coding patterns I have learned to solve not only some of the most common problems, but the 14 patterns (yes, there are way more than 14, but the point here is taking 6 months of preparation and condensing it into a 30 minute read that would not take more than 1-2 weeks to master. I have found these problems and patterns to be the most useful in that the data structures and algorithms are used in many other problems and become familiar over time. Good luck!

Please feel free to comment if you got some value or find any errors!

Thanks!

Table of Contents

• 1. Sliding Window

bradtraversy

Common Terminal Commands

Key Commands & Navigation

Before we look at some common commands, I just want to note a few keyboard commands that are very helpful:

• Up Arrow: Will show your last command
• Down Arrow: Will show your next command
• Tab: Will auto-complete your command
• Ctrl + L: Will clear the screen

filidorwiese

git_current_branch () {
        local ref
        ref=$(command git symbolic-ref --quiet HEAD 2> /dev/null) 
        local ret=$? 
        if [[ $ret != 0 ]]
        then
                [[ $ret == 128 ]] && return
                ref=$(command git rev-parse --short HEAD 2> /dev/null)  || return
        fi
        echo ${ref#refs/heads/}

bradtraversy

MongoDB Cheat Sheet

Show All Databases

show dbs

Show Current Database

bradtraversy

VSCode Shortcuts

List of helpful shortcuts for faster coding

If you have any other helpful shortcuts, feel free to add in the comments of this gist :)

Official List of all commands

• Windows
• Mac

bradtraversy

Docker Commands, Help & Tips

Show commands & management commands

$ docker

Docker version info

bradtraversy

GENERATORS:

• Text Content Generator - http://www.lipsum.com
• Favicon Generator - http://tools.dynamicdrive.com/favicon
• Data Generator - https://mockaroo.com/
• Mobile Mockup Generator - https://mockuphone.com
• Logo Generator - https://www.logaster.com
• UUID Generator - https://www.uuidgenerator.net/
• Hash Generator - https://passwordsgenerator.net/sha256-hash-generator/
• Ultimate Code Generator - https://webcode.tools/

bradtraversy

SSH Cheat Sheet

This sheet goes along with this SSH YouTube tutorial

Login via SSH with password (LOCAL SERVER)

$ ssh brad@192.168.1.29

Create folder, file, install Apache (Just messing around)

$ mkdir test

$ cd test

bradtraversy

#! /bin/bash

# ECHO COMMAND
# echo Hello World!

# VARIABLES
# Uppercase by convention
# Letters, numbers, underscores
NAME="Bob"
# echo "My name is $NAME"

fomightez

# These are meant to work in both Python 2 and 3, except where noted.

# See my useful_pandas_snippets.py for those related to dataframes (such as pickling/`df.to_pickle(save_as)`)
# https://gist.github.com/fomightez/ef57387b5d23106fabd4e02dab6819b4
# also see https://gist.github.com/fomightez/324b7446dc08e56c83fa2d7af2b89a33 for examples of my 
# frequently used Python functions and slight variations for more expanded, modular structures.


#argparse
# good snippet collection at https://mkaz.tech/code/python-argparse-cookbook/