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Set Django IntegerField by choices=… name
...n the admin! I have tested that the value really changes! What should I do now?
– Mahdi
Dec 13 '13 at 18:59
This is th...
Installing a local module using npm?
...rds to creating a local package, installing it and then using it, I don't know... link works, (and its great), but the terminology is rather confusing.
– smaudet
Dec 25 '15 at 22:22
...
Cast Double to Integer in Java
...r val = (myDouble == null)? null : Integer.valueOf(myDouble.intValue());
Now it works fine for most values. However integers have a very small range (min/max value) compared to a Double. On top of that, doubles can also hold "special values", that integers cannot:
1/0 = +infinity
-1/0 = -infini...
Create list of single item repeated N times
...'string'] * len(columns)
Mutable items
I've used Python for a long time now, and I have never seen a use-case where I would do the above with a mutable instance. Instead, to get, say, a mutable empty list, set, or dict, you should do something like this:
list_of_lists = [[] for _ in columns]
T...
What does the question mark in Java generics' type parameter mean?
...4.
Update: PDF link was updated since Oracle removed it a while back. It now points to the copy hosted by the Queen Mary University of London's School of Electronic Engineering and Computer Science.
Update 2: Lets go into a bit more detail as to why you'd want to use wildcards.
If you declare a ...
Can scrapy be used to scrape dynamic content from websites that are using AJAX?
... a JSON file:
Which presents all the information I'm looking for.
From now, I must implement all this knowledge in scrapy. Let's define the spider for this purpose:
class spider(BaseSpider):
name = 'RubiGuesst'
start_urls = ['http://www.rubin-kazan.ru/guestbook.html']
def parse(sel...
Null or default comparison of generic argument in C#
... @Jordan here's the IL for that - as you can see, it clearly boxes. Now, whether boxing is an issue for you is contextual. It clearly won't matter for your example since the program exits straight away. However, every box is an allocation. If you deal with anything non-trivial, avoiding unnec...
Correct way to load a Nib for a UIView subclass
...
I'm going to mark this correct. I don't know if it's best practice but it works.
– Adam Waite
Mar 14 '13 at 13:47
...
What's the point of Spring MVC's DelegatingFilterProxy?
...
Do you know what a Servlet Filter is and how it works? It's a very useful piece of the Servlet Spec, allowing us to apply AOP-like concepts to servicing of HTTP requests. Many frameworks use Filter implementations for various things,...
How to use Active Support core extensions
... up loading a lot of unneeded stuff with a simple require 'activesupport'. Now we have to do things like
require 'active_support/core_ext/object/blank'
If you don't care about granularity, you can choose to load bigger chunks. If you want everything in one big gulp use...
For 1.9.2:
rvm 1.9.2
...