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How to create duplicate allowed attributes
...are limited to being applied only once to a single field/property/etc. You can see this from the definition of the Attribute class on MSDN:
[AttributeUsageAttribute(..., AllowMultiple = false)]
public abstract class Attribute : _Attribute
Therefore, as others have noted, all subclasses are limite...
How to Turn Off Showing Whitespace Characters in Visual Studio IDE
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@Vintharas: It exists because people like me keep it on ALL THE TIME, because we like always being aware of what we're inserting or how we're changing the file. Gives us more casual control over our environment. There are also cases where it's act...
SBT stop run without exiting
...onfiguration, your runs happen in the same JVM that sbt is running, so you can't easily kill them separately.
If you do your run in a separate, forked JVM, as described at Forking, then you can kill that JVM (by any means your operating system offers) without affecting sbt's JVM:
fork in run := tr...
NameError: global name 'unicode' is not defined - in Python 3
I am trying to use a Python package called bidi. In a module in this package (algorithm.py) there are some lines that give me error, although it is part of the package.
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Run a callback only if an attribute has changed in Rails
...omething
# ...
end
end
This utilizes the fact that the before_save callback can conditionally execute based on the return value of a method call. The status_id_changed? method comes from ActiveModel::Dirty, which allows us to check if a specific attribute has changed by simply appending _cha...
Private vs Public in Cache-Control
Can you please describe an example indicating difference between Public and Private Cache-Control in asp.net applications hosted in IIS.
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Rails 3: I want to list all paths defined in my rails application
...ed helper path functions (that are created from routes) in my rails 3 application, if that is possible.
5 Answers
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Python memory usage of numpy arrays
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You can use array.nbytes for numpy arrays, for example:
>>> import numpy as np
>>> from sys import getsizeof
>>> a = [0] * 1024
>>> b = np.array(a)
>>> getsizeof(a)
8264
>>> ...
lock(new object()) — Cargo cult or some crazy “language special case”?
...n by a consultant, and while dozens of red flags have already popped up, I can't wrap my head around the following snippet:
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How does “304 Not Modified” work exactly?
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When the browser puts something in its cache, it also stores the Last-Modified or ETag header from the server.
The browser then sends a request with the If-Modified-Since or If-None-Match header, telling the server to send a 304 if the content still has that date...