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How does python numpy.where() work?
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How do they achieve internally that you are able to pass something like x > 5 into a method?
The short answer is that they don't.
Any sort of logical operation on a numpy array returns a boolean array. (i.e. __gt__, __lt__, etc all return boolea...
How set maximum date in datepicker dialog in android?
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I'm getting error when I paste the code - getActivity() is in red. the error is "can not find symbol method getActivity()". It is suggeting to create a method or create property.
– Sriram Nadiminti
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A python class that acts like dict
...er) instead of simply delegating to the instance's __dict__ - which essentially means you're creating two dicts for every instance.
– Aaron Hall♦
Jan 8 '17 at 0:39
8
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gem install: Failed to build gem native extension (can't find header files)
... What you say is required, but it's ruby-devel that's needed to fix the error message in question.
– Edward Anderson
Oct 25 '12 at 18:38
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Rails update_attributes without save?
..., :is_admin => true }) # Raises an ActiveModel::MassAssignmentSecurity::Error
user.assign_attributes({ :name => 'Bob'})
user.name # => "Bob"
user.is_admin? # => false
user.new_record? # => true
share...
Is there any way to see the file system on the iOS simulator?
...e:
~/Library/Application Support/iPhone Simulator
It had directories for all models of simulators (4.0, 4.1, 5.0, etc) you have ever run, go to the one you are running from in Xcode.
Once in a folder, go to Applications, choose the Finder option that shows date for files, and sort by date. Your ...
Custom UITableViewCell from nib in Swift
...e identifier in Table View Cell in the Attribute Inspector. so... run time error occurred.
– mazend
Mar 8 at 14:08
By ...
Python syntax for “if a or b or c but not all of them”
...'x', 'y', 'z'])
args = parser.parse_args()
if len(args.abc) != 3:
parser.error('expected 3 arguments')
print(args.abc)
Here are some usage examples:
# default case
wim@wim-zenbook:/tmp$ ./three_or_none.py
['x', 'y', 'z']
# explicit case
wim@wim-zenbook:/tmp$ ./three_or_none.py 1 2 3
['1', '2'...
Non-CRUD operations in a RESTful service
...dding non-CRUD operations to a RESTful service? Say I have a service that allows CRUD access to records like this:
4 Answe...
How to open files relative to home directory
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edited Apr 29 '16 at 23:05
the Tin Man
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