This document contains code for an autopilot program that monitors the reservoir level of a heart-lung machine. It controls a roller pump to maintain the reservoir level within set limits by reading the reservoir weight from a load cell meter and adjusting the pump flow rate accordingly. The program uses timers and queues to monitor the reservoir level over time, and plays warning sounds or voice alerts when changing the pump state between full, partial and stopped flow.
Starting with the system calll "getrusage", this returns synchronous, process-level information, mainly max RSS used. This talk describes the output from getrusage, the rusage formatting utility in ProcStats, and several examples of using it to examine time and memory use.
Optional first & final outputs to give baseline and total status, differencing avoids extraneous output, and user messages allow arbitrary stat's and tracking content.
The combination makes this nice for tracking both long-lived and shorter, more intensive processing.
PHP 8.1 brings Enums, one of the most requested features in PHP.
Enums, or Enumerations, allow creating strict and type-safe structures for fixed values. An Enum structure can hold a number of values that can also be backed with integer or string values.
In this comprehensive session, we will discover what Enums are, why they are useful, how to apply them on our applications including Drupal, and things to watch out for when using Enums.
Audience
This session is for those who are familiar with modern PHP practices such as Object Oriented Programming, and principles such as Liskov Substitution principle. A quick introduction will be given to catch up to speed, but familiarity with such concepts can help a lot.
What you will learn
What are Enums.
Why Enums are useful.
How to use Enums
Migrating from magic constants/values to Enums.
Backed Enums and storing/fetching Enum values with a database.
Using Enums in a Drupal context.
Caveats when using Enums.
Author
Ayesh Karunaratne is the author of PHP.Watch (https://php.watch), where he provides in-depth articles and documents on PHP and latest changes to the language.
PHP 8.0: https://php.watch/versions/8.0
PHP 8.1: https://php.watch/versions/8.1
Enums: https://php.watch/versions/8.1/enums
public void turnRight(double degrees) {rotationInDegrees + - = deg.pdfisenbergwarne4100
public void turnRight(double degrees) {
rotationInDegrees + - = degrees;
}
public void turnLeft(double degrees) {
rotationInDegrees - = degrees;
}
Actor
public class Actor {
private EZImage pikachu; // Member variable to store bug picture
private int x, y, startx, starty; // Member variables to store x, y, startx, starty
private int destx, desty; // Member variables to store destination values
private long starttime; // Member variable to store the start time
private long duration; // Member variable to store the duration
private boolean interpolation; // Member variable that is set to true if it is in the
interpolation state
// ********* SCALE
private float currentScale = 1;
private float destScale = 1;
private float startScale = 1;
private boolean interpolationScale;
// Constructor for RCBug takes 3 parameters
public Actor(String filename,int posx, int posy){
// Set the current position of the bug
x=posx;y=posy;
// Create the image of the bug
pikachu = EZ.addImage(filename, posx, posy);
// Move it to the starting position. This is actually redundant.
pikachu.translateTo(x,y);;
// Set interpolation mode to false initially
interpolation = false;
interpolationScale = false;
}
// Set the destination by giving it 3 variables
// Dur means duration and is measured in seconds
//public void setDestination(int posx, int posy, long dur){
public void moveto(int posx, int posy, long dur){
// Set destination position and duration
// Convert seconds to miliseconds
destx = posx; desty = posy; duration = dur*1000;
// Get the startting time (i.e. time according to your computer)
starttime = System.currentTimeMillis();
// Set the starting position of your bug
startx=x; starty=y;
// Set interolation mode to true
interpolation = true;
interpolationScale = false;
}
// ********* SCALE
public void setScale(float s, float dur){
destScale = s;
starttime = System.currentTimeMillis();
startScale = currentScale;
interpolationScale = true;
}
// If you?re in interpolation state then return true, else false.
public boolean moving() {
return interpolation;
}
// ********* SCALE
public boolean scaling() {
return interpolationScale;
}
// This moves the bug based on the current time and elapsed time according to the interpolation
equation
public void go(){
// If interpolation mode is true then do interpolation
if (interpolation == true) {
//linear interpolation
// Normalize the time (i.e. make it a number from 0 to 1)
float normTime = (float) (System.currentTimeMillis() - starttime)/ (float) duration;
// Calculate the interpolated position of the bug
x = (int) (startx + ((float) (destx - startx) * normTime));
y = (int) (starty + ((float) (desty - starty) * normTime));
// If the difference between current time and start time has exceeded the duration
// then the animation/interpolation is over.
if ((System.currentTimeMillis() - starttime) >= duration) {
// Set interpolation to false
interpolation = false;
// Move the bug all the way to the destination
x = destx; y = desty;
}
//.
PHP 8.1 brings Enums, one of the most requested features in PHP.
Enums, or Enumerations, allow creating strict and type-safe structures for fixed values. An Enum structure can hold a number of values that can also be backed with integer or string values.
In this comprehensive session, we will discover what Enums are, why they are useful, how to apply them on our applications, and things to watch out for when using Enums.
PHP 7.1 contains new exciting features and improvements that can facilitate the life of many PHP developers. During the talk I will show some of these new features like nullable types, catching of multiple exceptions, the curl HTTP/2 server push support, void return types, Class constant visibility, authenticated encryption in OpenSSL with GCM and CCM modes, and more.
b. (10 pts) Implement the rotate left method for AVL trees.c. (10 .pdfakanshanawal
b. (10 pts) Implement the rotate left method for AVL trees.
c. (10 pts) Implement the rotate right method for AVL trees.
d. (10 pts) Implement the rotate left-right method for AVL trees.
e. (10 pts) Implement the rotate right-left method for AVL trees.
f. (15 pts) Implement the rebalance method for AVL trees.
g. (3 pts) Implement pre-order, in-order, and post-order traversals for AVL trees.
All of this should be implemented in the below code, in C++, without changing any of the
parameters or functions as they are laid out.
#include
#include
#include "AVLTree.h"
#include "AVLNode.h"
using namespace std;
AVLTree::AVLTree() {
root = nullptr;
size = 0;
}
std::shared_ptr AVLTree::getRoot() {
return root;
}
int AVLTree::getSize() {
return size;
}
std::shared_ptr AVLTree::search(int val) {
return search(root, val);
}
std::shared_ptr AVLTree::search(std::shared_ptr n, int val) {
if (n == NULL) //if root node is null just return null value
{
return n;
}
//if target is less than root's value search in left half
if (val < n->value)
{
return search(n->left, val);
}
//if target is greater than root's value search in right half
else if (val > n->value)
{
return search(n->right, val);
}
//else if target is equal to root node just return the root node i.e n.
return n;
}
std::shared_ptr AVLTree::minimum() {
std::shared_ptr curr = root;
while (curr && curr->left) {
curr = curr->left;
}
return curr;
}
std::shared_ptr AVLTree::minimum(std::shared_ptr n) {
std::shared_ptr curr = n;
while (curr && curr->left) {
curr = curr->left;
}
return curr;
}
std::shared_ptr AVLTree::maximum() {
std::shared_ptr curr = root;
while (curr && curr->right) {
curr = curr->right;
}
return curr;
}
std::shared_ptr AVLTree::maximum(std::shared_ptr n) {
std::shared_ptr curr = n;
while (curr && curr->right) {
curr = curr->right;
}
return curr;
}
int getHeight(std::shared_ptr n) {
if (n == nullptr) {
return -1;
}
return n->height;
}
int getBalanceFactor(std::shared_ptr n) {
if (n == nullptr) {
return 0;
}
return getHeight(n->left) - getHeight(n->right);
}
void AVLTree::insertValue(int val) {
root = insertValue(root, val);
}
std::shared_ptr AVLTree::insertValue(std::shared_ptr n, int val) {
if (n == nullptr) {
shared_ptr newNode(new AVLNode(val));
size++;
return newNode;
}
if (val < n->value) {
n->left = insertValue(n->left, val);
}
else if (val > n->value) {
n->right = insertValue(n->right, val);
}
else {
// Duplicate value, no change
return n;
}
// Update the height of the current node
n->height = 1 + max(getHeight(n->left), getHeight(n->right));
// Rebalance the node if necessary
return rebalance(n);
}
void AVLTree::deleteValue(int val) {
root = deleteValue(root, val);
}
std::shared_ptr AVLTree::deleteValue(std::shared_ptr n, int val) {
if (n == nullptr) {
return nullptr;
}
if (val < n->value) {
n->left = deleteValue(n->left, val);
}
else if (val > n->value) {
n->right = deleteValue(n->right, val);
}
else {
// Found the value to delete
if (n->left == nullptr && n->right == nullptr) {
// .
Think Async: Asynchronous Patterns in NodeJSAdam L Barrett
JavaScript is single threaded, so understanding the async patterns available in the language is critical to creating maintainable NodeJS applications with good performance. In order to master “thinking in async”, we’ll explore the async patterns available in node and JavaScript including standard callbacks, promises, thunks/tasks, the new async/await, the upcoming asynchronous iteration features, streams, CSP and ES Observables.
Starting with the system calll "getrusage", this returns synchronous, process-level information, mainly max RSS used. This talk describes the output from getrusage, the rusage formatting utility in ProcStats, and several examples of using it to examine time and memory use.
Optional first & final outputs to give baseline and total status, differencing avoids extraneous output, and user messages allow arbitrary stat's and tracking content.
The combination makes this nice for tracking both long-lived and shorter, more intensive processing.
PHP 8.1 brings Enums, one of the most requested features in PHP.
Enums, or Enumerations, allow creating strict and type-safe structures for fixed values. An Enum structure can hold a number of values that can also be backed with integer or string values.
In this comprehensive session, we will discover what Enums are, why they are useful, how to apply them on our applications including Drupal, and things to watch out for when using Enums.
Audience
This session is for those who are familiar with modern PHP practices such as Object Oriented Programming, and principles such as Liskov Substitution principle. A quick introduction will be given to catch up to speed, but familiarity with such concepts can help a lot.
What you will learn
What are Enums.
Why Enums are useful.
How to use Enums
Migrating from magic constants/values to Enums.
Backed Enums and storing/fetching Enum values with a database.
Using Enums in a Drupal context.
Caveats when using Enums.
Author
Ayesh Karunaratne is the author of PHP.Watch (https://php.watch), where he provides in-depth articles and documents on PHP and latest changes to the language.
PHP 8.0: https://php.watch/versions/8.0
PHP 8.1: https://php.watch/versions/8.1
Enums: https://php.watch/versions/8.1/enums
public void turnRight(double degrees) {rotationInDegrees + - = deg.pdfisenbergwarne4100
public void turnRight(double degrees) {
rotationInDegrees + - = degrees;
}
public void turnLeft(double degrees) {
rotationInDegrees - = degrees;
}
Actor
public class Actor {
private EZImage pikachu; // Member variable to store bug picture
private int x, y, startx, starty; // Member variables to store x, y, startx, starty
private int destx, desty; // Member variables to store destination values
private long starttime; // Member variable to store the start time
private long duration; // Member variable to store the duration
private boolean interpolation; // Member variable that is set to true if it is in the
interpolation state
// ********* SCALE
private float currentScale = 1;
private float destScale = 1;
private float startScale = 1;
private boolean interpolationScale;
// Constructor for RCBug takes 3 parameters
public Actor(String filename,int posx, int posy){
// Set the current position of the bug
x=posx;y=posy;
// Create the image of the bug
pikachu = EZ.addImage(filename, posx, posy);
// Move it to the starting position. This is actually redundant.
pikachu.translateTo(x,y);;
// Set interpolation mode to false initially
interpolation = false;
interpolationScale = false;
}
// Set the destination by giving it 3 variables
// Dur means duration and is measured in seconds
//public void setDestination(int posx, int posy, long dur){
public void moveto(int posx, int posy, long dur){
// Set destination position and duration
// Convert seconds to miliseconds
destx = posx; desty = posy; duration = dur*1000;
// Get the startting time (i.e. time according to your computer)
starttime = System.currentTimeMillis();
// Set the starting position of your bug
startx=x; starty=y;
// Set interolation mode to true
interpolation = true;
interpolationScale = false;
}
// ********* SCALE
public void setScale(float s, float dur){
destScale = s;
starttime = System.currentTimeMillis();
startScale = currentScale;
interpolationScale = true;
}
// If you?re in interpolation state then return true, else false.
public boolean moving() {
return interpolation;
}
// ********* SCALE
public boolean scaling() {
return interpolationScale;
}
// This moves the bug based on the current time and elapsed time according to the interpolation
equation
public void go(){
// If interpolation mode is true then do interpolation
if (interpolation == true) {
//linear interpolation
// Normalize the time (i.e. make it a number from 0 to 1)
float normTime = (float) (System.currentTimeMillis() - starttime)/ (float) duration;
// Calculate the interpolated position of the bug
x = (int) (startx + ((float) (destx - startx) * normTime));
y = (int) (starty + ((float) (desty - starty) * normTime));
// If the difference between current time and start time has exceeded the duration
// then the animation/interpolation is over.
if ((System.currentTimeMillis() - starttime) >= duration) {
// Set interpolation to false
interpolation = false;
// Move the bug all the way to the destination
x = destx; y = desty;
}
//.
PHP 8.1 brings Enums, one of the most requested features in PHP.
Enums, or Enumerations, allow creating strict and type-safe structures for fixed values. An Enum structure can hold a number of values that can also be backed with integer or string values.
In this comprehensive session, we will discover what Enums are, why they are useful, how to apply them on our applications, and things to watch out for when using Enums.
PHP 7.1 contains new exciting features and improvements that can facilitate the life of many PHP developers. During the talk I will show some of these new features like nullable types, catching of multiple exceptions, the curl HTTP/2 server push support, void return types, Class constant visibility, authenticated encryption in OpenSSL with GCM and CCM modes, and more.
b. (10 pts) Implement the rotate left method for AVL trees.c. (10 .pdfakanshanawal
b. (10 pts) Implement the rotate left method for AVL trees.
c. (10 pts) Implement the rotate right method for AVL trees.
d. (10 pts) Implement the rotate left-right method for AVL trees.
e. (10 pts) Implement the rotate right-left method for AVL trees.
f. (15 pts) Implement the rebalance method for AVL trees.
g. (3 pts) Implement pre-order, in-order, and post-order traversals for AVL trees.
All of this should be implemented in the below code, in C++, without changing any of the
parameters or functions as they are laid out.
#include
#include
#include "AVLTree.h"
#include "AVLNode.h"
using namespace std;
AVLTree::AVLTree() {
root = nullptr;
size = 0;
}
std::shared_ptr AVLTree::getRoot() {
return root;
}
int AVLTree::getSize() {
return size;
}
std::shared_ptr AVLTree::search(int val) {
return search(root, val);
}
std::shared_ptr AVLTree::search(std::shared_ptr n, int val) {
if (n == NULL) //if root node is null just return null value
{
return n;
}
//if target is less than root's value search in left half
if (val < n->value)
{
return search(n->left, val);
}
//if target is greater than root's value search in right half
else if (val > n->value)
{
return search(n->right, val);
}
//else if target is equal to root node just return the root node i.e n.
return n;
}
std::shared_ptr AVLTree::minimum() {
std::shared_ptr curr = root;
while (curr && curr->left) {
curr = curr->left;
}
return curr;
}
std::shared_ptr AVLTree::minimum(std::shared_ptr n) {
std::shared_ptr curr = n;
while (curr && curr->left) {
curr = curr->left;
}
return curr;
}
std::shared_ptr AVLTree::maximum() {
std::shared_ptr curr = root;
while (curr && curr->right) {
curr = curr->right;
}
return curr;
}
std::shared_ptr AVLTree::maximum(std::shared_ptr n) {
std::shared_ptr curr = n;
while (curr && curr->right) {
curr = curr->right;
}
return curr;
}
int getHeight(std::shared_ptr n) {
if (n == nullptr) {
return -1;
}
return n->height;
}
int getBalanceFactor(std::shared_ptr n) {
if (n == nullptr) {
return 0;
}
return getHeight(n->left) - getHeight(n->right);
}
void AVLTree::insertValue(int val) {
root = insertValue(root, val);
}
std::shared_ptr AVLTree::insertValue(std::shared_ptr n, int val) {
if (n == nullptr) {
shared_ptr newNode(new AVLNode(val));
size++;
return newNode;
}
if (val < n->value) {
n->left = insertValue(n->left, val);
}
else if (val > n->value) {
n->right = insertValue(n->right, val);
}
else {
// Duplicate value, no change
return n;
}
// Update the height of the current node
n->height = 1 + max(getHeight(n->left), getHeight(n->right));
// Rebalance the node if necessary
return rebalance(n);
}
void AVLTree::deleteValue(int val) {
root = deleteValue(root, val);
}
std::shared_ptr AVLTree::deleteValue(std::shared_ptr n, int val) {
if (n == nullptr) {
return nullptr;
}
if (val < n->value) {
n->left = deleteValue(n->left, val);
}
else if (val > n->value) {
n->right = deleteValue(n->right, val);
}
else {
// Found the value to delete
if (n->left == nullptr && n->right == nullptr) {
// .
Think Async: Asynchronous Patterns in NodeJSAdam L Barrett
JavaScript is single threaded, so understanding the async patterns available in the language is critical to creating maintainable NodeJS applications with good performance. In order to master “thinking in async”, we’ll explore the async patterns available in node and JavaScript including standard callbacks, promises, thunks/tasks, the new async/await, the upcoming asynchronous iteration features, streams, CSP and ES Observables.