sansyrox

class FreqWord(object):
    def __init__(self, freq, word):
        self.freq = freq
        self.word = word
        
    def __lt__(self, other):
        if self.freq != other.freq:
            return lt(self.freq, other.freq)
        else:
            # opposite sort

sansyrox

What to Expect and Tips

• 45-minute systems interview, focus on responding to real world problems with an unhealthy service, such as a web server or database. The interview will start off at a high level troubleshooting a likely scenario, dig deeper to find the cause and some possible solutions for it. The goal is to probe your knowledge of systems at scale and under load, so keep in mind the challenges of the Facebook environment.
• Focus on things such as tooling, memory management and unix process lifecycle.

Systems

More specifically, linux troubleshooting and debugging. Understanding things like memory, io, cpu, shell, memory etc. would be pretty helpful. Knowing how to actually write a unix shell would also be a good idea. What tools might you use to debug something? On another note, this interview will likely push your boundaries of what you know (and how to implement it).

Design/Architecture 

Interview is all about taking an ambiguous question of how you might build a system and letting

sansyrox

Contract Killer

The popular open-source contract for web professionals by Stuff & Nonsense

• Originally published: 23rd December 2008
• Revised date: March 15th 2016
• Original post

---

sansyrox

Installing Postgres via Brew

Pre-Reqs

Brew Package Manager

In your command-line run the following commands:

1. brew doctor
2. brew update

sansyrox

from json import load as json_load

with open("sample_input.json") as input_fh:
    people = json_load(input_fh)
    for person in people["people"]:
        if person["age"] >= 30:
            print("Name: {name}, City: {city}".format(name=person["name"], city=person["city"]))

sansyrox

from csv import reader as csv_reader

with open("sample_input.csv") as input_fh:
    people = csv_reader(input_fh)
    headers = next(people)
    for row in people:
        person = (dict(zip(headers, row)))
        if int(person["age"]) >= 30:
            print("Name: {name}, City: {city}".format(name=person["name"], city=person["city"]))

sansyrox

from collections import defaultdict
from heapq import *

def dijkstra(edges, f, t):
    g = defaultdict(list)
    for l,r,c in edges:
        g[l].append((c,r))

    q, seen, mins = [(0,f,())], set(), {f: 0}
    while q:

sansyrox

from collections import deque


def get_last(filename, n=5):
    """
    Returns the last n lines from the file
    """
    try:
        with open(filename) as f:
            return deque(f, n)

sansyrox

MySQL Cheat Sheet

Help with SQL commands to interact with a MySQL database

MySQL Locations

• Mac /usr/local/mysql/bin
• Windows /Program Files/MySQL/MySQL version/bin
• Xampp /xampp/mysql/bin

Add mysql to your PATH

sansyrox

Final Submission Report

• Developer: Sanskar
• Github: @stealthanthrax
• Organisation: FOSSASIA
• Program: Advance Developer Program (ADP)
• Projects: SUSI Linux Project