Code refactoring is crucial but often overlooked. It can improve the design and performance of existing code.

The Python code below takes about 14 seconds to complete. Refactor the getData function to make it run in less than 10 seconds. Post your answer in the comments.


Code refactoring is crucial but often overlooked. It can improve the design and performance of existing code.

The Python code below takes about 17 seconds to complete. Refactor the getData function to make it run in less than 5 seconds. Post your answer in the comments.


Code refactoring is crucial but often overlooked. It can improve the design and performance of existing code.

The Python code below takes about 12 seconds to execute. Refactor the getData function to make it run in less than 1 second. Post your answer in the comments.


Discovering anomalies in complex multivariate and multidimensional data can be quite a challenge. Visualizing these anomalies can be even trickier, especially if you want to keep it simple without having to go over thousands of charts to filter out issues from false positives and noise. Using statistical methods we can aggregate complex data to be displayed on a single heatmap. By hovering over specific cells, we can quickly display the individual data on charts.

Heatmap: https://healzer.github.io/Industrial-Data-Analysis/hmap1.html?testdays=3&testlike=1

This system was first implemented for a high-tech enterprise’s CI/CD pipeline. It is being used by R&D, Q&A and management to keep track of…


Most of you know CRM by the many advanced tools out there such as Salesforce, Capterra and Hubspot. But millions of small companies still use Excel/Word/Files/Directories to manage their accounts, invoices and projects. I have met very few individual contractors who use productivity tools/apps, even simple things like notepad apps to record customer requests and issues. Even fewer apply basic CRM practices to stay in touch with their customers, such as keeping their contact details and/or sending out promotional emails.

I understand that for many businesses it may seem like a lot of overhead with little or no immediate value…


Past few weeks I was obsessed with the song Mr Sandman. And been thinking of making a cat edition of this beat.

Since I couldn’t find anything decent on YouTube, it was time to have a productive Saturday!

Video Demo: https://www.youtube.com/watch?v=y7hKNtucQbg
Site Demo: https://nevolin.be/meow/
GitHub: https://github.com/healzer/MeowSynth

This code may not work on a mobile device (not sure why).

Implementation

I’ll briefly explain how I made this.

I used ToneJS which allows us to sample and synthesize mp3 sounds and use them as separate notes (it does some manipulations behind the scenes).

Next we need the piano notes of this song, so…


Welcome to the fourth level where we solve Python Challenges from Codr’s Ranked mode. The goal is to reach the Genius level, so join me at Codr!


Welcome to the third level where we solve Python Challenges from Codr’s Ranked mode. The goal is to reach the Genius level, so join me at Codr!


I was reading an interesting post on Reddit on product psychology, and it reminded me of the Goal Gradient Effect.

This effect tells us that:

  • The closer to their goal the more motivated people are.
  • As people get closer to a reward, they speed up to get to their goal faster.
  • People are motivated by how much is left to reach their target, not how far they’ve come.

The author also gave a pretty good example: “Profile Strength” progress bar on LinkedIn makes customers more likely to complete their profile.

This got me thinking of my own project Codr —…


Welcome to the second level where we solve Python Challenges from Codr’s Ranked mode. The goal is to reach the Genius level, so join me at Codr!

We start off with quite hard challenge. Given the function name cross it seems to be the doing a cross product of two arrays. We have to fix two bugs; the first droplet bug is an easy guess, we can use the mathematical symmetry to confidently say it should be variable a because the calculations all are of fashion a * b.

The second rocket bug has to be a number, this is…

Ilya Nevolin

Become a rockstar programmer and try to reach genius status on codr https://nevolin.be/codr/

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