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How do I do an OR filter in a Django query?
...o.db.models import Q
query = Q(first_name='mark')
query.add(Q(email='mark@test.com'), Q.OR)
query.add(Q(last_name='doe'), Q.AND)
queryset = User.objects.filter(query)
This ends up with a query like :
(first_name = 'mark' or email = 'mark@test.com') and last_name = 'doe'
This way there is no n...
How can I perform a str_replace in JavaScript, replacing text in JavaScript?
...unlikely to beat indexing into a string in the common case.
For a simple test run on the JS perf page, I've documented some of the results:
<script>
// Setup
var startString = "xxxxxxxxxabcxxxxxxabcxx";
var endStringRegEx = undefined;
var endStringString = undefined;
var en...
how to convert array values from string to int?
...
but if you have string 'test', you got: array([0]=> 0 )
– Dmitry Dubovitsky
Oct 9 '13 at 13:39
10
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Quicksort vs heapsort
...? What Quicksort has that is so special over others implementations?
I've tested the algorithms myself and I've seen that Quicksort has something special indeed. It runs fast, much faster than Heap and Merge algorithms.
The secret of Quicksort is: It almost doesn't do unnecessary element swaps. Sw...
Stop form refreshing page on submit
...rom refreshing even if there is a Javascript error which can be useful for testing and development.
– jjz
Apr 30 '14 at 19:47
14
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What is the maximum possible length of a query string?
... after 64k characters, but can serve more than 100k characters. No further testing was done beyond that.
Firefox (Browser)
After 65,536 characters, the location bar no longer displays the URL in Windows Firefox 1.5.x. However, longer URLs will work. No further testing was done after 100,000 charact...
Safari 3rd party cookie iframe trick no longer working?
...ed request feel free to try the following code:
Note: This is still being tested properly and may be less stable than the first version.
Use at your own risk / Feedback is appreciated.
(Thanks to CBroe for pointing me into the right direction here allowing to improve the solution)
// Start Sessio...
What's the scope of the “using” declaration in C++?
...namespaces all being used by one "conglomerator"-type file, and gmock unit-testing was extra tedious because each test used things from a specific namespace, and I thought I had to qualify each and every variable. Using using inside a function (or even a gtest TEST macro!) makes my life so much bett...
When would you call java's thread.run() instead of thread.start()?
...
You might want to call run() in a particular unit test that is concerned strictly with functionality and not with concurrency.
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jQuery scroll to element
... article Smoothly scroll to an element without a jQuery plugin. And I have tested it on the example below.
<html>
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.5.1/jquery.min.js"></script>
<script>
$(document).ready(function (){
...