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How to use Elasticsearch with MongoDB?
...data from everything what is supporting streams (i.e. MongoDB, PostgreSQL, MySQL, JSON files, etc)
Example for MongoDB to Elasticsearch:
Install packages:
npm install elasticbulk
npm install mongoose
npm install bluebird
Create script i.e. script.js:
const elasticbulk = require('elasticbulk')...
Cleaner way to do a null check in C#? [duplicate]
...public static class Helper
{
public static bool IsNull<T>(this T root,Expression<Func<T, object>> getter)
{
var visitor = new IsNullVisitor();
visitor.CurrentObject = root;
visitor.Visit(getter);
return visitor.IsNull;
}
}
class Program
...
Convert JS Object to form data
...hould work on IE11 and evergreen browsers.
function objectToFormData(obj, rootName, ignoreList) {
var formData = new FormData();
function appendFormData(data, root) {
if (!ignore(root)) {
root = root || '';
if (data instanceof File) {
formDat...
What data is stored in Ephemeral Storage of Amazon EC2 instance?
...f you "stop" an instance that is backed by EBS then the information on the root volume will still be in the same state when you "start" the machine again. According to the documentation, "By default, the root device volume and the other Amazon EBS volumes attached when you launch an Amazon EBS-back...
/etc/apt/sources.list" E212: Can't open file for writing
...
That happens to me all the time, I open a root file for writing:
Instead of losing all your changes and re-opening with sudo. See this demo of how to save those changes:
One time Setup demo to create a root owned read only file for a lower user:
sudo touch temp.t...
How do I pre-populate a jQuery Datepicker textbox with today's date?
... This also worked as I wished, since my dateFormat needs to match MySQL's date format (yy-mm-dd). This setDate adds zero padding to the month and day.
– jjohn
Oct 8 '14 at 17:34
...
What is the difference between trie and radix trie data structures?
... "smiled", "smiles" and "smiling" using the following static assignments:
root['s']['m']['i']['l']['e']['\0'] = smile_item;
root['s']['m']['i']['l']['e']['d']['\0'] = smiled_item;
root['s']['m']['i']['l']['e']['s']['\0'] = smiles_item;
root['s']['m']['i']['l']['i']['n']['g']['\0'] = smiling_item;
...
JavaScript Regular Expression Email Validation [duplicate]
...his is invalid too. Look at list of highest level domains iana.org/domains/root/db
– Daniel
Apr 22 '18 at 20:25
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Open file via SSH and Sudo with Emacs
...
/su: or /sudo: on remote hosts
You can also use this syntax to sudo/su to root (or of course any other user) on a remote host:
C-xC-f /ssh:you@remotehost|sudo:remotehost:/path/to/file RET
Important: be sure to specify the hostname explicitly: sudo:remotehost: rather than sudo:: (see below).
As this...
How do I send a file as an email attachment using Linux command line?
I've created a script that runs every night on my Linux server that uses mysqldump to back up each of my MySQL databases to .sql files and packages them together as a compressed .tar file. The next step I want to accomplish is to send that tar file through email to a remote email server for safek...