samarpanda

Nginx

HttpRewriteModule

1. the name of a variable; false vales are: empty string("", or any string starting with "0");
2. a comparison of a variable using the = and != operators;
3. pattern matching with regular expressions:
   ~ performs a case-sensitive match
   ~* performs a case-insensitive match i.e firefox matches Firefox
!~ and !~* mean the opposite, doesn't match.
4. check for existence of a file using the -f or !-f operators;

samarpanda

Debugging Nginx Configuration

• Set Nginx log-level to debug

  server {  
    error_log /var/logs/nginx/samar.error.log  debug;  
  }  
  # Word of caution: Don't forget to revert debug-level for error_log on a *very* high traffic site.  

samarpanda

gifify() {
  if [[ -n "$1" ]]; then
    if [[ $2 == '--good' ]]; then
      ffmpeg -i $1 -r 10 -vcodec png out-static-%05d.png
      time convert -verbose +dither -layers Optimize -resize 600x600\> out-static*.png  GIF:- | gifsicle --colors 128 --delay=5 --loop --optimize=3 --multifile - > $1.gif
      rm out-static*.png
    else
      ffmpeg -i $1 -s 600x400 -pix_fmt rgb24 -r 10 -f gif - | gifsicle --optimize=3 --delay=3 > $1.gif
    fi
  else

samarpanda

Helping Venkat in StackOverFlow link

Question Venkat.as.

Solution Updated.as

samarpanda

var v = document.querySelector('video'),
  sources = v.querySelectorAll('source'),
  last = sources[sources.length-1];
  last.addEventListener('error', function(ev){
    var d = document.createElement('div');
    d.innerHTML = v.innerHTML;
    v.parentNode.replaceChild(d, v);
  }, false);

samarpanda

Python & Django commands cheatsheet.

1. To create project django-admin.py startproject project_name
2. To run project python manage.py runserver 8000 and python manage.py runserver 0.0.0.0:8000
3. Update database as per model changes python manage.py syncdb
4. To create app python manage.py startapp app_name
5. Including app in site python manage.py sql app_name

samarpanda

/**
* Extends Object
*/
Object.prototype.extends = function(extension) {
  var hasOwnProperty  = Object.hasOwnProperty(),
      object          = Object.create(this);
  for(var property in extension){
    if(hasOwnProperty.call(extension, property) || typeof object[property] === "undefined")
      object[property] = extension[property];
  }

samarpanda

A Pen by Samar Panda

A Pen by Samar Panda on CodePen.

License.

samarpanda

Handle ignore changes in tracked files locally

## Start untracking changes locally
git update-index --assume-unchanged <file_path>

## Start tracking changes again
git update-index --no-assume-unchanged <file_path>

samarpanda

// Attach event
function addEvent(obj, type, fn){
  if( obj.attachEvent ){
    obj['e'+type+fn] = fn;
    obj[type+fn] = function(){obj['e'+type+fn](window.event);};
    obj.attachment( 'on'+type, obj[type+fn]);
  }else
    obj.addEventListener(type, fn, false);
}