vitalymak

'use strict';

const child_process = require('child_process');
const execCallback = (resolve, reject) => {
	return (error, stdout, stderr) => {
		stdout && console.log(stdout);
		stderr && console.log(stderr);
		error ? reject(new Error(error)) : resolve();
	};
};

vitalymak

'use strict';

const Promise = require('bluebird'); // at least 3.3.5
const log = console.log.bind(console); // bind is safeguard for browser

Promise.resolve('value 1')
.tap(log) // value 1
.then(log)// value 1
.then(log)// undefined
.then(() => Promise.reject(new Error('reason 1')))

vitalymak

DIR=$( cd "$( dirname "${BASH_SOURCE[0]}" )" && pwd )

Is a useful one-liner which will give you the full directory name of the script no matter where it is being called from

These will work as long as the last component of the path used to find the script is not a symlink (directory links are OK). If you want to also resolve any links to the script itself, you need a multi-line solution:

SOURCE="${BASH_SOURCE[0]}"
while [ -h "$SOURCE" ]; do # resolve $SOURCE until the file is no longer a symlink

vitalymak

'use strict';

const Promise = require('bluebird');

let start = Date.now();
let promises = [1];
for (let i = 1; i <= 10; ++i) {
    promises.push(() => new Promise(resolve => setTimeout(() => {
        console.log(`#${i} completed in ${Date.now() - start}ms`);
        resolve('Resolved value ' + i);

vitalymak

function gpr {
	eval "git fetch upstream +refs/pull/"$@"/head:refs/remotes/upstream/pr/"$@" && git checkout upstream/pr/"$@""
}

vitalymak

'use strict';

function* f1 () {
    yield 'f1 yield #1';
    yield 'f1 yield #2';
    return 'f1 RETURN';
}

function* f2 () {
    yield 'f2 yield #1';

vitalymak

launchctl unload /Library/LaunchAgents/org.macosforge.xquartz.startx.plist
sudo launchctl unload /Library/LaunchDaemons/org.macosforge.xquartz.privileged_startx.plist
sudo rm -rf /opt/X11* /Library/Launch*/org.macosforge.xquartz.* /Applications/Utilities/XQuartz.app /etc/*paths.d/*XQuartz
sudo pkgutil --forget org.macosforge.xquartz.pkg

# Log out and log in

vitalymak

# First download El Captain from App Store (Purchases tab)
# instructions provided by http://apple.stackexchange.com/a/211722

hdiutil attach "/Applications/Install OS X El Capitan.app/Contents/SharedSupport/InstallESD.dmg" -noverify -nobrowse -mountpoint /Volumes/esd
hdiutil create -o ElCapitan3.cdr -size 7316m -layout SPUD -fs HFS+J
hdiutil attach ElCapitan3.cdr.dmg -noverify -nobrowse -mountpoint /Volumes/iso
asr restore -source /Volumes/esd/BaseSystem.dmg -target /Volumes/iso -noprompt -noverify -erase
rm /Volumes/OS\ X\ Base\ System/System/Installation/Packages
cp -rp /Volumes/esd/Packages /Volumes/OS\ X\ Base\ System/System/Installation
cp -rp /Volumes/esd/BaseSystem.chunklist /Volumes/OS\ X\ Base\ System/

vitalymak

const Promise = require('bluebird');

const list = [300, 500, 400]

const getMapper = name =>
    ms => Promise.delay(ms).then(() => console.log(`${name}: ${ms}ms done in ${Date.now() - start}`));

const start = Date.now();

Promise.map(list, getMapper('map, infinity concurrency'));

vitalymak

• Close Android File Transfer
• Open Activity Monitor and kill “Android File Transfer Agent”
• Go to where you installed “Android File Transfer.app” (I have it under /Applications)
• Ctrl+click –> “Show package contents”
• Go to Contents/Resources
• Rename “Android File Transfer Agent” to e.g. “Android File Transfer Agent_DISABLED”
• Then go to “/Users/username/Library/Application Support/Google/Android File Transfer” and again rename the Agent app.