sansyrox

Compile i3 on Linux Mint (Ubuntu distros)

Install dependencies:

sudo apt install libxcb1-dev libxcb-keysyms1-dev libpango1.0-dev \
                 libxcb-util0-dev libxcb-icccm4-dev libyajl-dev \
                 libstartup-notification0-dev libxcb-randr0-dev \
                 libev-dev libxcb-cursor-dev libxcb-xinerama0-dev \
                 libxcb-xkb-dev libxkbcommon-dev libxkbcommon-x11-dev \
                 autoconf libxcb-xrm0 libxcb-xrm-dev automake \

sansyrox

Overview of Python Virtual Environments

This guide is targetted at intermediate or expert users who want low-level control over their Python environments.

When you're working on multiple coding projects, you might want a couple different version of Python and/or modules installed. This helps keep each workflow in its own sandbox instead of trying to juggle multiple projects (each with different dependencies) on your system's version of Python. The guide here covers one way to handle multiple Python versions and Python environments on your own (i.e., without a package manager like conda). See the Using the workflow section to view the end result.

h/t @sharkinsspatial for linking me to the perfect cartoon

sansyrox

adb help // List all comands

== Adb Server
adb kill-server
adb start-server 

== Adb Reboot
adb reboot
adb reboot recovery 
adb reboot-bootloader

sansyrox

SSSP Algorithm

Problem Used https://leetcode.com/problems/network-delay-time/

Time Complexity Dijkstra - V + ElogE - SSSP Time Complexity of Dijkstra's Algorithm is O(V^2) but due to minheap it drops down Bellman Ford - VE - SSSP : Bellman Ford is to check if there is a negative cycle in the graph, Floyd Warshall - V^3 - MSSP**

Dijkstra

sansyrox

# encoding: utf8
# vigenere cipher
# https://stackoverflow.com/a/2490718/1675586

def encode(key, string):
    encoded_chars = []
    for i in range(len(string)):
        key_c = key[i % len(key)]
        encoded_c = chr(ord(string[i]) + ord(key_c) % 256)
        encoded_chars.append(encoded_c)

sansyrox

Torrent Courses List

sansyrox

I was installing some python libraries that I needed, and this message came up:  

Traceback (most recent call last):
 File "/usr/bin/pip3", line 11, in <module>
 sys.exit(main())
 File "/usr/lib/python3/dist-packages/pip/__init__.py", line 215, in main
 locale.setlocale(locale.LC_ALL, '')
 File "/usr/lib/python3.5/locale.py", line 594, in setlocale
 return _setlocale(category, locale)
locale.Error: unsupported locale setting

sansyrox

Since flask doesn't support async coroutines it is not trivial to create aiohttp routes

There are 2 ways to create and work with these routines

aio Event loop

import asyncio
from flask import Flask

async def abar(a):
    print(a)

sansyrox

Virtual Hosts on nginx (CSC309)

When hosting our web applications, we often have one public IP address (i.e., an IP address visible to the outside world) using which we want to host multiple web apps. For example, one may wants to host three different web apps respectively for example1.com, example2.com, and example1.com/images on the same machine using a single IP address.

How can we do that? Well, the good news is Internet browsers

sansyrox

from functools import cmp_to_key
sorted(mylist, key=cmp_to_key(compare))

def compare(item1, item2):
    if fitness(item1) < fitness(item2):
        return -1
    elif fitness(item1) > fitness(item2):
        return 1
    else:
        return 0