AndreiHondrari

Remarkable code samples - Andrei G. Hondrari

Data processing

• graph representation - https://stackoverflow.com/questions/55505389/how-to-build-this-graph-in-python/55517614#55517614
• detection of anomalous values within a signal, hence a series of values - https://stackoverflow.com/questions/53895442/finding-anomalous-values-from-sinusoidal-data/53900407#53900407
• binary/byte low level operations - https://stackoverflow.com/questions/55523234/efficient-way-to-append-bytes-to-a-word-and-reverse-them/55523858#55523858
• large text processing - https://stackoverflow.com/questions/53795266/iterate-over-huge-text-file-read-chunks-between-two-reoccurring-patterns-using/53795333#53795333
• multiprocessing of large datasets - https://stackoverflow.com/questions/53894014/how-to-efficiently-perform-row-wise-operations-using-pandas/53897491#53897491
• search algorithm within time-complexity bounds - https://stackoverflow.com/questions/55405236/search-in-rotated-sorted-array-in-olog-n-time/55406388#55406388

AndreiHondrari

import secrets


def generate_django_secret_key(length=50):
  allowed_chars=(
      'abcdefghijklmnopqrstuvwxyz'
      'ABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789'
  )
  return ''.join(secrets.choice(allowed_chars) for i in range(length))

AndreiHondrari

# Docker
# dummy docker containers
docker create --name ubuntu_can ubuntu /bin/bash -c "sleep infinity"
docker create --name alpine_box alpine /bin/sh -c "sleep infinity"

# Image conversion
find . -name "*.jpg" -print0 | xargs -0 -I xx convert xx -resize 1920 -quality 85 xx
find . -type f -name "*.png" | xargs -I xx basename -s .png xx | xargs -I xx convert xx.png -resize 960 -quality 90 output/xx.jpg

AndreiHondrari

QEMU essential commands

Observations

• KVM acceleration is for Linux machines
• HVF acceleration is for MacOS Hypervisor.Framework

qemu-img options explained

• -f specify disk format