piotrlewandowski

/**
 * Returns a hash code for a string.
 * (Compatible to Java's String.hashCode())
 *
 * The hash code for a string object is computed as
 *     s[0]*31^(n-1) + s[1]*31^(n-2) + ... + s[n-1]
 * using number arithmetic, where s[i] is the i th character
 * of the given string, n is the length of the string,
 * and ^ indicates exponentiation.
 * (The hash value of the empty string is zero.)

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# delete local tag '12345'
git tag -d 12345
# delete remote tag '12345' (eg, GitHub version too)
git push origin :refs/tags/12345
# alternative approach
git push --delete origin tagName
git tag -d tagName

piotrlewandowski

const readline = require('readline')
const blank = '\n'.repeat(process.stdout.rows)
console.log(blank)
readline.cursorTo(process.stdout, 0, 0)
readline.clearScreenDown(process.stdout)

piotrlewandowski

function toTitleCase(str) {
    return str.replace(/\w\S*/g, function(txt){
        return txt.charAt(0).toUpperCase() + txt.substr(1).toLowerCase();
    });
}

// or in ES6:

var text = "foo bar loo zoo moo";
const ucfirst = text => text.toLowerCase()

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// test

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history | grep -e "\d\+\s\+git checkout [^-.]\+" | awk '{ print $NF }' | tail -n 10

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/**
 * This is based on https://getbootstrap.com/docs/4.1/utilities/spacing/
 */

$directioMap: (
  top: t,
  right: r,
  left: l,
  bottom: b
);

piotrlewandowski

Setup the project folder

    mkdir passport-local
    npm init
    # Use default values for npm init prompts

Install required packages

piotrlewandowski

Git Submodules basic explanation

Why submodules?

In Git you can add a submodule to a repository. This is basically a repository embedded in your main repository. This can be very useful. A couple of advantages of using submodules:

• You can separate the code into different repositories.

piotrlewandowski

Download Audio from YouTube

-i - ignore errors

-c - continue

-t - use video title as file name

--extract-audio - extract audio track