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What is the most efficient way to store a list in the Django models?
...
If you are using Django >= 1.9 with Postgres you can make use of ArrayField advantages
A field for storing lists of data. Most field types can be used, you
simply pass another field instance as the base_field. You may also
specify a size. ArrayField can be nested to store multi-di...
jQuery UI Sortable, then write order into a database
...our/url/here'
});
}
});
What this does is that it creates an array of the elements using the elements id. So, I usually do something like this:
<ul id="sortable">
<li id="item-1"></li>
<li id="item-2"></li>
...
</ul>
When you use the seri...
Get all child views inside LinearLayout at once
...EdiTexts, if you want all Views you can replace EditText with View.
SparseArray<EditText> array = new SparseArray<EditText>();
private void findAllEdittexts(ViewGroup viewGroup) {
int count = viewGroup.getChildCount();
for (int i = 0; i < count; i++) {
View view = v...
How do you serialize a model instance in Django?
...
To avoid the array wrapper, remove it before you return the response:
import json
from django.core import serializers
def getObject(request, id):
obj = MyModel.objects.get(pk=id)
data = serializers.serialize('json', [obj,])
...
Easiest way to toggle 2 classes in jQuery
...e switched on another element (say tabs in a container).
// 1: define the array of switching classes:
var types = ['web','email'];
// 2: get the active class:
var type = $(mybutton).prop('class');
// 3: switch the class with the other on (say..) the container. You can guess the other by using _.w...
Does use of final keyword in Java improve the performance?
...irectly onto the operand stack (it will not be stored into local variables array like the previous example does via bipush 12; istore_0; iload_0) - which sort of makes sense since no one can change it.
On the other hand why in the second case the compiler does not produce istore_0 ... iload_0 is bey...
How to draw a rounded Rectangle on HTML Canvas?
...2, i3, p1, p2, p3, prevPt, nextPt,
len = pts.length,
res = new Array(len);
for (i2 = 0; i2 < len; i2++) {
i1 = i2-1;
i3 = i2+1;
if (i1 < 0) {
i1 = len - 1;
}
if (i3 == len) {
i3 = 0;
}
p1 = pts[i1];
p2 = pts[i2];
p3 = pts[i3];
p...
How to read from standard input in the console?
...ecommend using bufio.NewScanner
*/
func main() {
// To create dynamic array
arr := make([]string, 0)
scanner := bufio.NewScanner(os.Stdin)
for {
fmt.Print("Enter Text: ")
// Scans a line from Stdin(Console)
scanner.Scan()
// Holds the string that scan...
How can I pass a parameter to a setTimeout() callback?
...I don't. Here's the little fix for it to work: instead of slice.call, use Array.prototype.slice.call(arguments, 2)
– Melanie
Oct 3 '13 at 16:44
7
...
What is move semantics?
... be destructed, even moved-from objects. And since we do not want the char array to be deleted when that happens, we have to set the pointer to null.
– fredoverflow
Oct 3 '13 at 7:55
...