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Efficient way to apply multiple filters to pandas DataFrame or Series
I have 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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Unit testing Anti-patterns catalogue
...se method to test another/distinct feature/functionality, a new assertion (and its corresponding actions i.e. Act steps from AAA) rides along in an existing test case.
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Regex doesn't work in String.matches()
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Welcome to Java's misnamed .matches() method... It tries and matches ALL the input. Unfortunately, other languages have followed suit :(
If you want to see if the regex matches an input text, use a Pattern, a Matcher and the .find() method of the matcher:
Pattern p = Pattern.comp...
How to load JAR files dynamically at Runtime?
...t classes are in what jars. As opposed to just loading a directory of jars and then instantiating classes. I am misunderstanding it?
– Allain Lalonde
Sep 13 '08 at 19:13
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Change “on” color of a Switch
I'm using a standard Switch control with the holo.light theme in a ICS app.
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What's the difference between the 'ref' and 'out' keywords?
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The ref modifier means that:
The value is already set and
The method can read and modify it.
The out modifier means that:
The Value isn't set and can't be read by the method until it is set.
The method must set it before returning.
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Routing for custom ASP.NET MVC 404 Error page
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Just add catch all route at the end of the routes table and display whatever page you want with it.
See: How can i make a catch all route to handle '404 page not found' queries for ASP.NET MVC?
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Vim search and replace selected text
Let's say we have a text, and I enter visual mode and select some text. How do I quickly do a search for the highlighted text and replace it with something else?
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How to get the pure text without HTML element using JavaScript?
I have the 1 button and some text in my HTML like the following:
10 Answers
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What is the difference between “#!/usr/bin/env bash” and “#!/usr/bin/bash”?
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Running a command through /usr/bin/env has the benefit of looking for whatever the default version of the program is in your current environment.
This way, you don't have to look for it in a specific place on the system, as those paths ma...