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Fastest way to get the first object from a queryset in django?
...ust do the above and it will only pull the first. You could even use .order_by() to ensure you get the first you want.
Be sure to add the .get() or else you will get a QuerySet back and not an object.
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How to lock orientation during runtime
...
setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE);
Called on an activity, will lock it to landscape. Look for the other flags in the ActivityInfo class. You can lock it back to portrait or make it sensor/slider driven.
More info here: http://www....
Determining Referer in PHP
... sent, or called (via AJAX), the current page. I don't want to use the $_SERVER['HTTP_REFERER'] , because of the (lack of) reliability, and I need the page being called to only come from requests originating on my site.
Edit: I am looking to verify that a script that preforms a series of actio...
How to turn on/off ReactJS 'development mode'?
...tely the magic comes down to React embedding references to process.env.NODE_ENV throughout the codebase; these act like a feature toggle.
if (process.env.NODE_ENV !== "production")
// do propType checks
The above is the most common pattern, and other libraries follow it as well. So to "disable" t...
How to remove an item from an array in AngularJS scope?
...te</a>
Controller:
$scope.delete = function ( idx ) {
var person_to_delete = $scope.persons[idx];
API.DeletePerson({ id: person_to_delete.id }, function (success) {
$scope.persons.splice(idx, 1);
});
};
...
How can mixed data types (int, float, char, etc) be stored in an array?
...y elements a discriminated union, aka tagged union.
struct {
enum { is_int, is_float, is_char } type;
union {
int ival;
float fval;
char cval;
} val;
} my_array[10];
The type member is used to hold the choice of which member of the union is should be used for e...
Is there a setting on Google Analytics to suppress use of cookies for users who have not yet given c
...ve defined elsewhere
window['ga-disable-UA-XXXXXX-Y'] = true;
}
var _gaq = _gaq || [];
_gaq.push(['_setAccount', 'UA-XXXXXXX-Y']);
_gaq.push(['_trackPageview']);
function onOptIn(){ //have this run when/if they opt-in.
window['ga-disable-UA-XXXXXX-Y'] = false;
//...snip......
Accurate way to measure execution times of php scripts
...otime — Return current Unix timestamp with microseconds
If get_as_float is set to TRUE, then microtime() returns a float, which represents the current time in seconds since the Unix epoch accurate to the nearest microsecond.
Example usage:
$start = microtime(true);
while (...) {
}
$...
php $_POST array empty upon form submission
...ed to share it as it cost me much time.
When using JSON content-type the $_POST array will not populate (only with multi-part forms I believe)
Here is what did work to correct the issue:
$rest_json = file_get_contents("php://input");
$_POST = json_decode($rest_json, true);
hope this helps someo...
How does type Dynamic work and how to use it?
...rized:
class DynImpl extends Dynamic {
import reflect.runtime.universe._
def applyDynamic[A : TypeTag](name: String)(args: A*): A = name match {
case "sum" if typeOf[A] =:= typeOf[Int] =>
args.asInstanceOf[Seq[Int]].sum.asInstanceOf[A]
case "concat" if typeOf[A] =:= typeOf[St...