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Method chaining - why is it a good practice, or not?
...chaining is the practice of object methods returning the object itself in order for the result to be called for another method. Like this:
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Object of custom type as dictionary key
... self.name.__hash__(), and if you do and you can do hash((x, y)) to avoid XORing yourself.
– Rosh Oxymoron
Feb 4 '11 at 19:02
5
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How to resize an image with OpenCV2.0 and Python2.6
...Python2.6 to show resized images. I used and adopted this example but unfortunately, this code is for OpenCV2.1 and does not seem to be working on 2.0. Here my code:
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Best way to compare two complex objects
... invoke the contained types’ Equals method within the containing types. For contained collections, use the SequenceEqual extension method, which internally calls IEquatable<T>.Equals or Object.Equals on each element. This approach will obviously require you to extend your types’ definition...
How to get row from R data.frame
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x[r,]
where r is the row you're interested in. Try this, for example:
#Add your data
x <- structure(list(A = c(5, 3.5, 3.25, 4.25, 1.5 ),
B = c(4.25, 4, 4, 4.5, 4.5 ),
C = c(4.5, 2.5, 4, 2.25, 3 )
),
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move_uploaded_file gives “failed to open stream: Permission denied” error
I keep getting this error when trying to configure the upload directory with Apache 2.2 and PHP 5.3 on CentOS.
13 Answers
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Easy way to convert Iterable to Collection
In my application I use 3rd party library (Spring Data for MongoDB to be exact).
19 Answers
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How do I create a URL shortener?
I want to create a URL shortener service where you can write a long URL into an input field and the service shortens the URL to " http://www.example.org/abcdef ".
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Bypass confirmation prompt for pip uninstall
...y <python package(s)>
pip uninstall -y package1 package2 package3
or from file
pip uninstall -y -r requirements.txt
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Handling the window closing event with WPF / MVVM Light Toolkit
...ing event (when a user clicks the upper right 'X' button) of my window in order to eventually display a confirm message or/and cancel the closing.
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