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How to remove all of the data in a table using Django
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142
Inside a manager:
def delete_everything(self):
Reporter.objects.all().delete()
def drop_t...
Sorting an array of objects by property values
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edited Jun 18 at 18:45
Abhishek
4,99833 gold badges99 silver badges2727 bronze badges
answered Jun...
Java: how can I split an ArrayList in multiple small ArrayLists?
....asList(5,3,1,2,9,5,0,7)
);
List<Integer> head = numbers.subList(0, 4);
List<Integer> tail = numbers.subList(4, 8);
System.out.println(head); // prints "[5, 3, 1, 2]"
System.out.println(tail); // prints "[9, 5, 0, 7]"
Collections.sort(head);
System.out.println(numbers); // prints "[1, ...
How to format a phone number with jQuery
I'm currently displaying phone numbers like 2124771000 . However, I need the number to be formatted in a more human-readable form, for example: 212-477-1000 . Here's my current HTML :
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How to check file MIME type with javascript before upload?
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364
You can easily determine the file MIME type with JavaScript's FileReader before uploading it to ...
Element-wise addition of 2 lists?
... zip(list1, list2)]
[5, 7, 9]
Timing comparisons:
>>> list2 = [4, 5, 6]*10**5
>>> list1 = [1, 2, 3]*10**5
>>> %timeit from operator import add;map(add, list1, list2)
10 loops, best of 3: 44.6 ms per loop
>>> %timeit from itertools import izip; [a + b for a, b i...
Disable ActiveRecord for Rails 4
I want to disable ActiveRecord in Rails 4. I did the following in config/application.rb
8 Answers
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How to generate all permutations of a list?
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Mateen Ulhaq
16.6k1111 gold badges6464 silver badges105105 bronze badges
answered Sep 19 '08 at 18:43
Eli BenderskyEli Bendersky
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Unable to create Android Virtual Device
... have installed "ARM EABI v7a System Image" (for each Android version from 4.0 and on you have to install a system image to be able to run a virtual device)
In your case only ARM system image exsits (Android 4.2). If you were running an older version, Intel has provided System Images (Intel x86 ATO...