vlucas

'use strict';

const crypto = require('crypto');

const ENCRYPTION_KEY = process.env.ENCRYPTION_KEY; // Must be 256 bits (32 characters)
const IV_LENGTH = 16; // For AES, this is always 16

function encrypt(text) {
 let iv = crypto.randomBytes(IV_LENGTH);
 let cipher = crypto.createCipheriv('aes-256-cbc', Buffer.from(ENCRYPTION_KEY), iv);

Mevrael

# Example for MySQL 5.7 how to use JOIN on 2 tables without junction table using new JSON column type.
# Let say we have 2 tables: posts and users
# Users may like posts
# We store the IDs of users who liked each post in posts.liked column which is a JSON array
# which might have a content like "[1, 2, 5, 10]"

SELECT posts.id AS post_id, users.id AS liked_by_user_id FROM posts JOIN users ON JSON_CONTAINS(posts.liked, CAST(users.id AS CHAR))

nepsilon

Auto-backup your configuration files with Vim

Not using versioning on your configuration files and editing them with Vim?

Use Vim’s backup option to automatically keep a copy of past versions. To put in your ~/.vimrc:

"Turn on backup option
set backup

eduncan911

#!/bin/bash
#
# GoLang cross-compile snippet for Go 1.6+ based loosely on Dave Chaney's cross-compile script:
# http://dave.cheney.net/2012/09/08/an-introduction-to-cross-compilation-with-go
#
# To use:
#
#   $ cd ~/path-to/my-awesome-project
#   $ go-build-all
#

dpryden

import java.io.IOException;
import java.net.URLClassLoader;
import java.nio.file.Files;
import java.nio.file.Paths;
import java.nio.file.Path;

/**
 * Example demonstrating a ClassLoader leak.
 *
 * <p>To see it in action, copy this file to a temp directory somewhere,

rmalayter

CREATE FUNCTION dbo.HMAC (
	@algo VARCHAR(20)
	,@key VARBINARY(MAX)
	,@data VARBINARY(MAX)
	)
	/* This function only takes VARBINARY parameters instead of VARCHAR
to prevent problems with implicit conversion from NVARCHAR to VARCHAR 
which result in incorrect hashes for inputs including non-ASCII characters. 
Always cast @key and @data parameters to VARBINARY when using this function. 
Tested against HMAC vectors for MD5 and SHA1 from RFC 2202 */