Danylo Lykov danlkv

Queue with timeout

A FIFO (First in first out) queue has two main methods:

put(), with puts an element to the queue,
get(), which returns next element.

If queue is empty, get() blocks.

Task

Filter commit history of github

Task

Get commits of a repository and return info about commits that contain a search query (string) in commit message.

Inputs:

Repository url
String to search for

System health event notifier

Problem setting

Suppose you have a remote system behind an API. The system is reactive: you send something to it, and it is expected to do something in result. There is an API endpoint (sink) that receives requests and a callback (source) that sends responses.

Sink is just a python function that eventually calls an http endpoint. Source could be implemented as webhook or a generator, but we'll focus on the latter case.

Webhook url, Integromat->Treebo

http://test.treebo.io:5002/webhooks/generic_webhook/test123

POST request. Payload format - JSON

{
    phone: str,

text: str

UNIX Philosophy

Write programs that do one thing and do it well.
Write programs to work together.
Write programs to handle text streams, because that is a universal interface.

Different concerns

Parse the file
Simulate circuit

Interpolate dict

Intro

Let's say you have a text string that greets a person, 'Hello, Mark!'. If you write a program for this greeting you might want to compose the string for any name of the person. One way to do this is to have a template string, 'Hello, ${user_name}!' and then use a function that will replace the ${...} with value of variable user_name. This is usually called string interpolation.

We want to have a dict interpolation, where the same is done for a nested structure. For example, if you have a dictionary, {'user':'User_id${uid}'}, and a variable uid=1, we want to get

Timer module

Implement functionality of a timer in event-action paradigm.

The API of the timer should be the following:

class TimerModule:
  
 ## Actions

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	-- The CXX compiler identification is GNU 10.1.0
	-- The Fortran compiler identification is GNU 10.1.0
	-- Check for working CXX compiler: /usr/bin/g++
	-- Check for working CXX compiler: /usr/bin/g++ - works
	-- Detecting CXX compiler ABI info
	-- Detecting CXX compiler ABI info - done
	-- Detecting CXX compile features
	-- Detecting CXX compile features - done
	-- Check for working Fortran compiler: /usr/bin/gfortran