yassineaboukir

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prologic

Learn Go in ~5mins

This is inspired by A half-hour to learn Rust and Zig in 30 minutes.

Basics

Your first Go program as a classical "Hello World" is pretty simple:

First we create a workspace for our project:

egel

#!/usr/bin/python
# -*- coding: utf-8 -*-

import sublime_plugin
import subprocess
from time import sleep
import sys
 
cl = lambda line: subprocess.Popen(line, shell=True, stdout=subprocess.PIPE).communicate()[0].strip()
log = lambda message: sys.stderr.write("Log: %s\n" % message)

andyrbell

# use ImageMagick convert
# the order is important. the density argument applies to input.pdf and resize and rotate to output.pdf
convert -density 90 input.pdf -rotate 0.5 -attenuate 0.2 +noise Multiplicative -colorspace Gray output.pdf

roycewilliams

#------------------------------------------------------------------------------
# Top 20K hashes from the Troy Hunt / haveibeenpwned Pwned Passwords list v6 (2020-06-19)
#    with frequency count and cracked plaintext passwords
#
# The latest version of this file can be found here:
#    https://gist.github.com/roycewilliams/226886fd01572964e1431ac8afc999ce
# The equivalent of this file, but based on v2 of the Pwned Passwords, is here:
#    https://gist.github.com/roycewilliams/281ce539915a947a23db17137d91aeb7
#------------------------------------------------------------------------------
# Notes and references:

stvhwrd

Curated List of Top 75 LeetCode Questions to Save Your Time

A list of the best LeetCode questions that teach you core concepts and techniques for each category/type of problem. Many other LeetCode questions are a mashup of the techniques from these individual questions.

Array

• Two Sum
• Best Time to Buy and Sell Stock
• Contains Duplicate
• Product of Array Except Self

bgrins

/*
Export bookmarks from Chrome as text.
Go to Bookmarks Manager->Organize->Export to HTML file. 
Then open that file, open console and run this command:
*/

[].map.call(document.querySelectorAll("dt a"), function(a) {
   return a.textContent + " - " + a.href
}).join("\n");

koenrh

Running Hashcat on Google Cloud's GPU-based VMs

In February 2017, Google announced the availability GPU-based VMs. I spun up a few of these instances, and ran some benchmarks. Along the way, I wrote down the steps taken to provision these VM instances, and install relevant drivers.

Update April 2019: Updated instructions to use instances with the Tesla T4 GPUs.

christianroman

import cv2.cv as cv
import tesseract
gray = cv.LoadImage('captcha.jpeg', cv.CV_LOAD_IMAGE_GRAYSCALE)
cv.Threshold(gray, gray, 231, 255, cv.CV_THRESH_BINARY)
api = tesseract.TessBaseAPI()
api.Init(".","eng",tesseract.OEM_DEFAULT)
api.SetVariable("tessedit_char_whitelist", "0123456789abcdefghijklmnopqrstuvwxyz")
api.SetPageSegMode(tesseract.PSM_SINGLE_WORD)
tesseract.SetCvImage(gray,api)
print api.GetUTF8Text()

Juerd

#!/usr/bin/perl -w
use strict;

@ARGV or die "Usage: $0 PNGFILE...\nOutputs the file names of the PNG files with trailing data.";

FILE: while (@ARGV) {
    my $fn = shift;
    eval {
        no warnings 'exiting';