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Add column with number of days between dates in DataFrame pandas
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Note: ensure you're using a new of pandas (e.g. 0.13.1), this may not work in older versions.
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How do you implement a private setter when using an interface?
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In interface you can define only getter for your property
interface IFoo
{
string Name { get; }
}
However, in your class you can extend it to have a private setter -
class Foo : IFoo
{
public string Name
{
get;
private set;
}
}
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How is mime type of an uploaded file determined by browser?
...pe of the uploaded file, to make sure it is application/x-zip-compressed or application/zip .
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Difference between namespace in C# and package in Java
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From: http://www.javacamp.org/javavscsharp/namespace.html
Java
Packages are used to organize files or public types to avoid type conflicts. Package constructs can be mapped to a file system.
system.security.cryptography.AsymmetricAlgorithm aa;
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Why fragments, and when to use fragments instead of activities?
...es. You can achieve some of the same things using activities and layouts (for example by using includes). However; fragments are wired in to the Android API, from HoneyComb, and up. Let me elaborate;
The ActionBar. If you want tabs up there to navigate your app, you quickly see that ActionBar.TabL...
How to jump to a particular line in a huge text file?
...ingle file. This is used by the traceback module to retrieve source lines for inclusion in the formatted traceback...
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Does Java have a HashMap with reverse lookup?
I have data that is organized in kind of a "key-key" format, rather than "key-value". It's like a HashMap, but I will need O(1) lookup in both directions. Is there a name for this type of data structure, and is anything like this included in Java's standard libraries? (or maybe Apache Commons?)
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Reset CSS display property to default value
Is it possible to override the display property with its default value? For example if I have set it to none in one style, and I want to override it in a different with its default.
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How do you create a REST client for Java? [closed]
With JSR 311 and its implementations we have a powerful standard for exposing Java objects via REST. However on the client side there seems to be something missing that is comparable to Apache Axis for SOAP - something that hides the web service and marshals the data transparently back to Java objec...
What is the difference between libsqlite3.dylib and libsqlite3.0.dylib?
I'm getting started with SQLite databases in an app I'm working on. I've not run into issues yet but one of the early steps from this tutorial is linking the SQLite3 framework. The tutorial calls for libsqlite3.0.dylib but I noticed another one libsqlite3.dylib. Is the latter just a symlink to ...