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Polymorphism vs Overriding vs Overloading
...avitational field as an input. This dependency on global state makes unit-testing CatheterizedIntersexAstronaut difficult, and show that subclassing may not always be the best method for composition of traits.
– Mike Samuel
Feb 2 '13 at 1:03
...
Logging in Scala
...ger appears to be maintained. I made my own targeting Scala 2.10 and the latest SLF4J. http://slf4s.org/
– Matt Roberts
Feb 26 '14 at 21:42
3
...
Django ManyToMany filter()
... examples of FOO__in=... style filters in the many-to-many and many-to-one tests. Here is syntax for your specific problem:
users_in_1zone = User.objects.filter(zones__id=<id1>)
# same thing but using in
users_in_1zone = User.objects.filter(zones__in=[<id1>])
# filtering on a few zon...
Detect if an input has text in it using CSS — on a page I am visiting and do not control?
...nput elements are unavoidably empty in this sense. The selector [value=""] tests whether the element has the value attribute in markup and has the empty string as its value. And :checked and :indeterminate are similar things. They are not affected by actual user input.
...
NOT IN vs NOT EXISTS
...
Actually, I believe this would be the fastest:
SELECT ProductID, ProductName
FROM Northwind..Products p
outer join Northwind..[Order Details] od on p.ProductId = od.ProductId)
WHERE od.ProductId is null
...
Deleting elements from std::set while iterating
... a monster beyond taming, and since there is no unique implementation (and test suites, if any, apparently do not cover such obvious cases as deleting elements in a loop), that makes the STL a shiny brittle toy that can go up with a bang when you look at it sideways.
– kuroi ne...
Enable bundling and minification in debug mode in ASP.NET MVC 4
...e reason is, that it's easier to debug while it's disabled. If you want to test the Impact on your application you have to set <compilation debug="true" /> in the Web.config
@Hebe: To Quote the MS page
It's easy to debug your JavaScript in a development environment (where the compilation...
Select random row from a sqlite table
...0, count). MAX is used to handle a case with empty table.
Here are simple test results on a table with 16k rows:
sqlite> .timer on
sqlite> select count(*) from payment;
16049
Run Time: real 0.000 user 0.000140 sys 0.000117
sqlite> select payment_id from payment limit 1 offset abs(random(...
Difference between open and codecs.open in Python
...
In Python 2 there are unicode strings and bytestrings. If you just use bytestrings, you can read/write to a file opened with open() just fine. After all, the strings are just bytes.
The problem comes when, say, you have a unicode string and you do the following:
>...
Custom attributes - Yea or nay?
... comment.data.replace(/\n|\r\n/g, '');
if ( /^\s*?\{.+\}\s*?$/.test(cData) ) {
try {
data(comment.parentNode).commentJSON =
(new Function('return ' + cData + ';'))();
} catch(e) {}
}
}
...