nemanjan00

race-condition-example

Just a simple race condition example.

nemanjan00

Dokku

Dokku je ekstremno jednostavan PaaS (platform as service) . Filozofija koje su se držali programeri dok su razvijali ovaj softver je poprilično jasna. Želeli su da naprave što jednostavniji potpuno funkcionalan klon Heroku platforme. I uspeli su u tome.

Ono što je prednost ovakvog sistema jeste to što vi ne morate (ali možete) da razmišljate o celokupnom kontejneru u kom se izvršava aplikacija već samo o aplikaciji i njenim zahtevima. Sve što treba da uradite jeste da pushujete svoj git repozitorijum i Dokku će od njega napraviti potpuno funkcionalan docker kontejner.

Šta se dešava kada pošaljem git repozitorijum?

Prvo što treba da znate o Dokkuu, Herokuu i sličnim rešenjima jeste to da oni koriste nešto što se zove buildpackovi. Buildpack je u suštini skup dodatnog softvera koji je neophodan za buildovanje i izvršavanje vaše aplikacije. Tako npr. imamo buildpack za PHP, buildpack za Python, za Ruby, etc.

nemanjan00

<?php
function broj($n){
	if($n == 1){
		return 1;
	}
	
	if($n % 2 == 0){
		return broj($n/2) - 1;
	}
	else

nemanjan00

<record from="1394631662" to="graphics/pictures/person/1394631662/portrait"/>
<record from="1394631663" to="graphics/pictures/person/1394631663/portrait"/>
<record from="1394631664" to="graphics/pictures/person/1394631664/portrait"/>
<record from="1394631665" to="graphics/pictures/person/1394631665/portrait"/>
<record from="1394631666" to="graphics/pictures/person/1394631666/portrait"/>
<record from="1394631667" to="graphics/pictures/person/1394631667/portrait"/>
<record from="1394631668" to="graphics/pictures/person/1394631668/portrait"/>
<record from="1394631669" to="graphics/pictures/person/1394631669/portrait"/>
<record from="1394631670" to="graphics/pictures/person/1394631670/portrait"/>
<record from="1394631671" to="graphics/pictures/person/1394631671/portrait"/>

nemanjan00

<?php
for($i = 1394631662; $i <= 1394634500; $i++){
	echo '<record from="'.$i.'" to="graphics/pictures/person/'.$i.'/portrait"/>'."\n";
}

nemanjan00

Idea

Structure

Workspaces

tmux actually gives unique ids for windows and they persist even when windows are reordered:

╭─nemanjan00@nemanjan00-laptop  ~  
╰─$ tmux list-windows -t turizam
1: php (1 panes) [192x53] [layout bbc5,192x53,0,0,8] @8
2: index.php (1 panes) [192x53] [layout 5e12,192x53,0,0,13] @13

nemanjan00

ELF Header:
  Magic:   7f 45 4c 46 02 01 01 00 00 00 00 00 00 00 00 00 
  Class:                             ELF64
  Data:                              2's complement, little endian
  Version:                           1 (current)
  OS/ABI:                            UNIX - System V
  ABI Version:                       0
  Type:                              EXEC (Executable file)
  Machine:                           Advanced Micro Devices X86-64
  Version:                           0x1

nemanjan00

package com.mycompany.app;

import java.util.Scanner;

public class App{	
	public static void main(String args[]) {
		Scanner sc = new Scanner(System.in);
		String str = sc.nextLine();
		
		for(int i = 0; i < str.length(); i++){

nemanjan00

<?php
function rm($dir){
	$list = scandir($dir);

	foreach($list as $path){
		$path = $dir."/".$path;

		if(is_dir($path)){
			rm($path);
		}

nemanjan00

error_log: {
  "name": "TypeError",
  "message": "Cannot read property 'getAttribute' of null",
  "origin": "$r.comet<comet.onmessage>",
  "fatal_level": 0,
  "stack": [
    "create_item@/v2/en-us/-/js/hon_v3/base-app.1971.js:37:15",
    "Object.apply@<anonymous>:17:19",
    "prepare@/v2/en-us/-/js/hon_v3/base-app.1971.js:35:31121",
    "Object.apply@<anonymous>:17:19",