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How does push notification technology work on Android?
...
From what I've heard during an Android developers conference in Israel:
There is simply a TCP socket waiting in accept mode on a cloud Google server. The TCP connection had been initiated by the Google Play application. That...
Convert JS Object to form data
...t, you can easily create a FormData object and append the names and values from that object to formData.
You haven't posted any code, so it's a general example;
var form_data = new FormData();
for ( var key in item ) {
form_data.append(key, item[key]);
}
$.ajax({
url : 'http://ex...
Sass or Compass without ruby?
... Sass is written in Ruby, so you’ll need Ruby installed as well.
Taken from sass's site
Compass (requires Ruby, as it's based on SASS)
Compass is an open-source CSS authoring framework which uses the Sass stylesheet language to make writing stylesheets powerful and easy.
Taken from compa...
Instagram how to get my user id from username?
...
@DannyTuppeny Did you ever hear back from Instagram?
– Queue
Jul 13 '16 at 23:14
...
Unable to import a module that is definitely installed
...s will be over-restricted. If you simply su first and then do the install from a full root shell, the resulting install is usable (at least it is for me). This was for pip, but may apply to apt-get as well. If others confirm this cause, may want to amend the answer accordingly?
...
Make XAMPP/Apache serve file outside of htdocs [closed]
...rojects\transitCalculator\trunk>
Order allow,deny
Allow from all
</Directory>
</VirtualHost>
Open your hosts file (C:\Windows\System32\drivers\etc\hosts).
Add
127.0.0.1 transitcalculator.localhost #transitCalculator
to the end of the file (before the Spybot - S...
How to get the first item from an associative PHP array?
...) will return the first element, but it will also remove the first element from the array.
$first = array_shift($array);
current() will return the value of the array that its internal memory pointer is pointing to, which is the first element by default.
$first = current($array);
If you want to...
Repository Pattern Step by Step Explanation [closed]
...ects are persisted. All of the knowledge of persistence, including mapping from tables to objects, is safely contained in the repository.
Very often, you will find SQL queries scattered in the codebase and when you come to add a column to a table you have to search code files to try and find usages...
Is a successor for TeX/LaTeX in sight? [closed]
...nswer is 'There are alternatives'. LaTeX and other packages suffer heavily from leaky abstraction issues and often require technical intervention to get what you want out of it. This puts you in the business of understanding how it works behind the scenes, which is actually fairly technical. Thus, y...
What does “fragment” mean in ANTLR?
...tlr4 references book :
Rules prefixed with fragment can be called only from other lexer rules; they are not tokens in their own right.
actually they'll improve readability of your grammars.
look at this example :
STRING : '"' (ESC | ~["\\])* '"' ;
fragment ESC : '\\' (["\\/bfnrt] | UNICODE) ...