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How exactly do Django content types work?
...mage = models.ImageField()
caption = models.TextField(blank=True)
class Comment(models.Model):
author = models.ForeignKey(User)
body = models.TextField(blank=True)
post = models.ForeignKey(Post)
picture = models.ForeignKey(Picture)
Okay, so we do have a way to theoretically create this ...
Elastic search, multiple indexes vs one index and types for different data sets?
...er in each shard since it is distributed to different indices.
Searching a combination of data models from 2 or more indices is going to generate overhead, because the query will have to be sent to more shards across indices, compiled and sent back to the user.
Not recommended if your data set is sm...
What is the difference between JAX-RS and JAX-WS?
...lf. It's mostly that JAX-WS specification includes lots overhead in how it communicates.
On the point about WSDL and API definitions, REST will more frequently use the URI structure and HTTP commands to define the API rather than message types, as is done in the JAX-WS. This means that you don't n...
“Deprecation warning: moment construction falls back to js Date” when trying to convert RFC2822 date
... If you don't have a choice on how the date is provided, I'd recommend the second bullet point, specifying the format of the date String. It removes the most ambiguity.
– Joshua Pinter
Feb 21 '16 at 22:23
...
What are all the user accounts for IIS/ASP.NET and how do they differ?
... AppPool\<pool name>. You also won't see these pool accounts in your computers User Manager. See the following for more information:
Application Pool Identities
ASP.NET v4.0: -
This will be the Application Pool Identity for the ASP.NET v4.0 Application Pool. See DefaultAppPool above.
...
Does name length impact performance in Redis?
...example key you give is for a set, set lookup methods are O(1). The more complex operations on a set (SDIFF, SUNION, SINTER) are O(N). Chances are that populating $userId was a more expensive operation than using a longer key.
Redis comes with a benchmark utility called redis-benchmark, if you m...
foldl versus foldr behavior with infinite lists
...azy, nothing is evaluated until the result is required. This means that to compute any part of the result, Haskell first iterates through the entire list constructing an expression of nested function applications, then evaluates the outermost function, evaluating its arguments as needed. If f always...
The Concept of 'Hold space' and 'Pattern space' in sed
... pattern space if you want to do something with it. For example, the print command p prints the pattern space only. Likewise, s operates on the pattern space.
Here is an example:
sed -n '1!G;h;$p'
(the -n option suppresses automatic printing of lines)
There are three commands here: 1!G, h and $...
Difference between framework and static library in xcode4, and how to call them
...s over static libraries is that they act as a neat way of packaging up the compiled library binary and any related headers. They can be dropped into your project (just like the SDK's built-in frameworks like Foundation and UIKit) and they should just work (most of the time).
Most frameworks contain...
Count, size, length…too many choices in Ruby?
...
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