Very glad to tell you that after getting inspired from Neo I have build my own very first Bot in Telegram + NR + shell + python(a bit) + JS suit as of now.
Following is its screen shot(my screen is not big as Neo's so couldn't capture all of it )
I will post a detailed thread on weekend in a new post, Thanks again Neo for letting know about this technology; O hope I could learn more from it.
Thanks,
R. Singh
These 2 Users Gave Thanks to RavinderSingh13 For This Post:
Hi Everyone
Could you kindly advise on how I should do a chkconfig and uninstalling mysql rpm on Red hat ES.Please check the errors that I'm getting below. :eek:
I need to uninstall MySQL completely from my linux system ver 2.4.21-37 and use the chkconfig command to switch it on... (15 Replies)
I'm currently looking into ways to integrate the Telegram API into the forums:
Telegram Bots - Bot Code Examples
I'm thinking, first off, to use the Telegram API to get forum alerts and notifications (to Bot or Not?).
Second, I thinking of ways to more deeply integrate Telegram into the... (5 Replies)
This problem has been killing me all day, and I cannot solve it.
Basically, I am using node.js with the mysql module and it will not connect to the database.
Here is the JS code snippet in node.js:
app.get("/test", function(req, res) {
var mysql = require("mysql");
var con =... (4 Replies)
After setting up MQTT and testing some ESP8266 and ESP32 modules, where I noted that testing in Programming ESP32 (ESP-WROOM-32) as an MQTT Client Subscribed to Linux Server Load Average Messages, I was so impressed with MQTT that I installed MQTT on three different computers, instantly and... (2 Replies)
Various Node-Red crypto modules do not work with PHP, so to send an encrypted message from a PHP script (in this case from a Ubuntu server) to Node-RED we need our own code.
After a few hours of searching, testing various libs, more testing and debugging, I got this PHP to Node-RED code... (0 Replies)
First, I want to thank Neo (LOL) for this post from 2018, Node.js and mysql - ER_ACCESS_DENIED_ERROR
I could not get the Node-RED mysql module to work and searched Google until all my links were purple! I kept getting ER_ACCESS_DENIED_ERROR with the right credentials. Nothing on the web was... (0 Replies)
I have just completed the first phase of integrating all these devices and technologies:
MQTT, Node-RED, Linux, Apache2, MySQL, PHP, Telegram, ESP32, ESP8266, and the Arduino Uno
The glue that binds all this together is MQTT. In fact, MQTT makes this kind of integration nearly trivial to... (1 Reply)
Discussion started by: Neo
1 Replies
LEARN ABOUT DEBIAN
tree::node
Node(3pm) User Contributed Perl Documentation Node(3pm)NAME
Tree::RedBlack::Node - Node class for Perl implementation of Red/Black tree
SYNOPSIS
use Tree::RedBlack; my $t = new Tree::RedBlack; $t->insert(3, 'dog'); my $node = $t->node(3); $animal = $node->val;
DESCRIPTION
A Tree::RedBlack::Node object supports the following methods:
key ()
Key of the node. This is what the nodes are sorted by in the tree.
val ($)
Value of the node. Can be any perl scalar, so it could be a hash-ref, f'rinstance. This can be set directly.
color ()
Color of the node. 1 for "red", 0 or undef for "black".
parent ()
Parent node of this one. Returns undef for root node.
left ()
Left child node of this one. Returns undef for leaf nodes.
right ()
Right child node of this one. Returns undef for leaf nodes.
min ()
Returns the node with the minimal key starting from this node.
max ()
Returns the node with the maximal key starting from this node.
successor ()
Returns the node with the smallest key larger than this node's key, or this node if it is the node with the maximal key.
predecessor ()
Similar to successor. WARNING: NOT YET IMPLEMENTED!!
You can use these methods to write utility routines for actions on red/black trees. For instance, here's a routine which writes a tree out
to disk, putting the byte offsets of the left and right child records in the record for each node.
sub dump {
my($node, $fh) = @_;
my($left, $right);
my $pos = tell $fh;
print $fh $node->color ? 'R' : 'B';
seek($fh, 8, 1);
print $fh $node->val;
if ($node->left) {
$left = dump($node->left,$fh);
}
if ($node->right) {
$right = dump($node->right,$fh);
}
my $end = tell $fh;
seek($fh, $pos+1, 0);
print $fh pack('NN', $left, $right);
seek($fh, $end, 0);
$pos;
}
You would call it like this:
my $t = new Tree::RedBlack;
...
open(FILE, ">tree.dump");
dump($t->root,*FILE);
close FILE;
As another example, here's a simple routine to print a human-readable dump of the tree:
sub pretty_print {
my($node, $fh, $lvl) = @_;
if ($node->right) {
pretty_print($node->right, $fh, $lvl+1);
}
print $fh ' 'x($lvl*3),'[', $node->color ? 'R' : 'B', ']', $node->key, "
";
if ($node->left) {
pretty_print($this->left, $fh, $lvl+1);
}
}
A cleaner way of doing this kind of thing is probably to allow sub-classing of Tree::RedBlack::Node, and then allow the Tree::RedBlack
constructor to take an argument saying what class of node it should be made up out of. Hmmm...
AUTHOR
Benjamin Holzman <bholzman@earthlink.net>
SEE ALSO
Tree::RedBlack
perl v5.10.0 2008-07-31 Node(3pm)