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Way to read first few lines for pandas dataframe
...rst n lines of a file without knowing the length of the lines ahead of time? I have a large file that takes a long time to read, and occasionally only want to use the first, say, 20 lines to get a sample of it (and prefer not to load the full thing and take the head of it).
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How to get JSON objects value if its name contains dots?
I have a very simple JSON array (please focus on "points.bean.pointsBase" object):
5 Answers
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What does the > (greater than bracket) mean beside file names in Eclipse's Package Explorer?
I'm setting up a new dev machine with Eclipse 3.7 Indigo. After pulling a my code down from SVN, the source tree in the Package Explorer is intermittently littered with a > to the left of the file name The parent package names have them too. (Note that this is an AspectJ project, but I don't thi...
VB.NET equivalent of C# property shorthand?
...0 and beyond, you can use the following shorthand:
public property FirstName as String
This will be handled as your short version in C# is - I think they call it "Auto Property"
See also: Auto-Implemented Properties (Visual Basic)
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How does inheritance work for Attributes?
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When Inherited = true (which is the default) it means that the attribute you are creating can be inherited by sub-classes of the class decorated by the attribute.
So - if you create MyUberAttribute with [AttributeUsage (Inherited = true)]
[AttributeUsage (Inherited = Tru...
Android imageview not respecting maxWidth?
So, I have an imageview that should display an arbitrary image, a profile picture downloaded from the internet. I want this the ImageView to scale its image to fit inside the height of the parent container, and a set max width of 60dip. However, if the image is tall ratio-wise, and doesn't need the ...
Do I need to store the salt with bcrypt?
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The salt is incorporated into the hash (encoded in a base64-style format).
For example, in traditional Unix passwords the salt was stored as the first two characters of the password. The remaining characters represented the hash value. The checker function knows this, and pulls the hash apart...
Not class selector in jQuery
Is there a simple selector expression to not select elements with a specific class?
2 Answers
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Create a new workspace in Eclipse
I don't see any menu item I can use to create a new workspace.
3 Answers
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“open/close” SqlConnection or keep open?
I have my business-logic implemented in simple static classes with static methods. Each of these methods opens/closes SQL connection when called:
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