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Efficient way to apply multiple filters to pandas DataFrame or Series
... a scenario where a user wants to apply several filters to a Pandas DataFrame or Series object. Essentially, I want to efficiently chain a bunch of filtering (comparison operations) together that are specified at run-time by the user.
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How to know if user is logged in with passport.js?
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In 98.8% of web development with express.js and passport.js you will deal with requests (app.get, app.post, etc), so talking about using passport.js outside of it is little bit pointless. Yes it is only within express route middleware handlers like...
AI2 SideBar Extension
Deutsche Version Motivation With smaller apps, the implemented functions can be triggered by a button. With larger apps, however, the available space quickly decreases and the layout becomes confusing. A side bar can help here. There are a number of implementations, but I haven't found a su...
Securing my REST API with OAuth while still allowing authentication via third party OAuth providers
...n and authorization:
A user authenticates to your web site by supplying some credential such as a username+password. OpenID allows this to be displaced by having the user authenticate to another service, which then asserts the user's identity to your web site on the user's behalf. Your site trust...
How to npm install to a specified directory?
...y existing node_modules directory higher up in the hierarchy. (See npm documentation on folders.)
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What is a difference between
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The first says that it's "some type which is an ancestor of E"; the second says that it's "some type which is a subclass of E". (In both cases E itself is okay.)
So the constructor uses the ? extends E form so it guarantees that when it fetches values ...
How to re-raise an exception in nested try/except blocks?
... that if I want to re-raise an exception, I simple use raise without arguments in the respective except block. But given a nested expression like
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Why do Java webapps use .do extension? Where did it come from?
...the Java Servlet
Specification. This section describes
the most common means of configuring a
application.
There are two common approaches to
defining the URLs that will be
processed by the controller servlet --
prefix matching and extension
matching. An appropriate mapping entry
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What is reflection and why is it useful?
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The name reflection is used to describe code which is able to inspect other code in the same system (or itself).
For example, say you have an object of an unknown type in Java, and you would like to call a 'doSomething' method on ...
How do I declare a 2d array in C++ using new?
... answered Jun 1 '09 at 20:45
Mehrdad AfshariMehrdad Afshari
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