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Best way to do multiple constructors in PHP
...class Student
{
protected $firstName;
protected $lastName;
// etc.
/**
* Constructor
*/
public function __construct() {
// allocate your stuff
}
/**
* Static constructor / factory
*/
public static function create() {
$instance = ...
MVC pattern on Android
... define your user interface in various XML files by resolution, hardware, etc.
You define your resources in various XML files by locale, etc.
You extend clases like ListActivity, TabActivity and make use of the XML file by inflaters.
You can create as many classes as you wish for your business logi...
How can I add an empty directory to a Git repository?
...
You can read "it's impossible, you can't, etc." all over the Internet for this frequent question. The .gitignore trick is a frequent answer, and satisfies many needs. However it IS possible to make git track an truly empty directory, see my answer
...
Wolfram's Rule 34 in XKCD [closed]
...ts neighbors match rule 1 above, it turns black/positive/1/true/whatever`, etc. etc. until you see that, for rule 110, if a cell and its neighbors match rules 1,2,3,5,6, then the cell turns black. Otherwise, it turns white. A while back, I wrote some JS code to allow me to play around with these uni...
ViewModel Best Practices
...
Separating classes by category (Controllers, ViewModels, Filters etc.) is nonsense.
If you want to write code for the Home section of your website (/) then create a folder named Home, and put there the HomeController, IndexViewModel, AboutViewModel, etc. and all related classes used by Ho...
.keyCode vs. .which
...nly. your event.wich || ... test for falsy (undefined, null, false, 0, '', etc)
– aMarCruz
May 22 '15 at 11:54
@aMarCr...
Simpler way to put PDB breakpoints in Python code?
...ork alright. Most other 'simple' programmers editors (emacs, sublimetext, etc) should have similar easy ways to do this.
Edit:
I actually have:
au FileType python map <silent> <leader>b oimport pdb; pdb.set_trace()<esc>
au FileType python map <silent> <leader>B Oimpo...
How to profile a bash shell script slow startup?
...another version that can output nanoseconds), do this at the beginning of /etc/bash.bashrc (or wherever you'd like to begin a trace in any Bash script):
PS4='+ $(date "+%s.%N")\011 '
exec 3>&2 2>/tmp/bashstart.$$.log
set -x
add
set +x
exec 2>&3 3>&-
at the end of ~/.bas...
Automatic Retina images for web sites
...bsite is designed, what kind of technology your typical visitors are using etc. Note that retina displays are not limited to the Macbook Pro Retina and the coming iMacs, but also include mobile devices, which may have their own needs.
The problem is also closely related to images in responsive desi...
How can I use interface as a C# generic type constraint?
...
{
SomeClass<IMyInterface> myMember; // or a property, method, etc.
}
Basically this involves scanning all types, inheritance, members, parameters, etc, etc, etc. If a type is a generic type and has a constraint, we check the constraint; if it's an array, we check the element type.
A...