This method provides you the array buffer start address in memory and number of elements in array. Here is an example:
my_array = array('i', [1,2,3,4,5])
my_array.buffer_info()
(33881712, 5)
public class Producer
{
private static Random random = new Random((int)DateTime.UtcNow.Ticks);
//produce the value that will be posted to buffer block
public double Produce ( )
{
var value = random.NextDouble();
Console.WriteLine($"Producing value: {value}...
Suppose we have an array of integers and we want to figure out the maximum value without holding the whole array in memory all at once. This approach can be adapted to handle a variety of other situations in which data needs to be processed while being deserialized instead of after.
extern crate se...
var bufferBlock = new BufferBlock<int>(new DataflowBlockOptions
{
BoundedCapacity = 1000
});
var cancellationToken = new CancellationTokenSource(TimeSpan.FromSeconds(10)).Token;
var producerTask = Task.Run(async () =>
{
var random = new Random();
while (!cancellati...
Not all type erasure involves virtual inheritance, allocations, placement new, or even function pointers.
What makes type erasure type erasure is that it describes a (set of) behavior(s), and takes any type that supports that behavior and wraps it up. All information that isn't in that set of beha...
core.async is about making processes that take values from and put values into channels.
(require [clojure.core.async :as a])
Creating channels with chan
You create a channel using the chan function:
(def chan-0 (a/chan)) ;; unbuffered channel: acts as a rendez-vous point.
(def chan-1 (a/chan...
int width = 256; //in pixels
int height = 256; //in pixels
BufferedImage image = new BufferedImage(width, height, BufferedImage.TYPE_4BYTE_ABGR);
//BufferedImage.TYPE_4BYTE_ABGR - store RGB color and visibility (alpha), see javadoc for more info
Graphics g = image.createGraphics();
//draw w...
BufferedImage image = new BufferedImage(256, 256, BufferedImage.TYPE_INT_ARGB);
//you don't have to use the Graphics object, you can read and set pixel color individually
for (int i = 0; i < 256; i++) {
for (int j = 0; j < 256; j++) {
int alpha = 255; //don't forget this, or ...
To easily select a buffer by filename, you can use:
:b [part_of_filename]<Tab><Tab><Tab>...<Enter>
The first Tab will expand the word to a full filename, and subsequent Tab presses will cycle through the list of possible matches.
When multiple matches are available, you ...
<C-^> will switch to and from the previous edited file. On most keyboards <C-^> is CTRL-6.
3<C-^> will switch to buffer number 3. This is very quick, but only if you know the buffer number.
You can see the buffer numbers from :ls or from a plugin such as MiniBufExplorer.
func bufferedUnbufferedExample(buffered bool) {
// We'll declare the channel, and we'll make it buffered or
// unbuffered depending on the parameter `buffered` passed
// to this function.
var ch chan int
if buffered {
ch = make(chan int, 3)
} else {
ch...
This example by Daniel Baggio was taken directly from this StackExchange answer, but has been reposted for visibility.
This class takes an Mat object and returns the BufferedImage object used by the javax.swing libraries. This can be used by a Graphics object to draw the image.
private BufferedIma...
You can attach an image in a texture to a framebuffer, so that you can render directly to that texture.
glGenFramebuffers (1, &framebuffer);
glBindFramebuffer (GL_FRAMEBUFFER, framebuffer);
glFramebufferTexture2D(GL_FRAMEBUFFER,
GL_COLOR_ATTACHMENT0,
...
Framebuffer is a type of buffer which stores color values, depth and stencil information of pixels in memory. When you draw something in OpenGL the output is stored in the default framebuffer and then you actually see the color values of this buffer on screen. You can also make your own framebuffer ...
with Ada.Containers.Synchronized_Queue_Interfaces;
with Ada.Containers.Unbounded_Synchronized_Queues;
with Ada.Text_IO;
procedure Producer_Consumer_V1 is
type Work_Item is range 1 .. 100;
package Work_Item_Queue_Interfaces is
new Ada.Containers.Synchronized_Queue_Interfaces
...
This example shows multiple producers and consumers sharing the same buffer. Protected entries in Ada implement a queue to handle waiting tasks. The default queuing policy is First In First Out.
------------------------------------------------------------------
-- Multiple producers and consumers ...
Consider the following code to copy one file to another:
import java.io.*;
public class FileCopy {
public static void main(String[] args) throws Exception {
try (InputStream is = new FileInputStream(args[0]);
OutputStream os = new FileOutputStream(args[1])) {
...
/**
* Resizes an image using a Graphics2D object backed by a BufferedImage.
* @param srcImg - source image to scale
* @param w - desired width
* @param h - desired height
* @return - the new resized image
*/
private BufferedImage getScaledImage(Image srcImg, int w, int h){
//Cre...
