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Creating a new column based on if-elif-else condition

... To formalize some of the approaches laid out above: Create a function that operates on the rows of your dataframe like so: def f(row): if row['A'] == row['B']: val = 0 elif row['A'] > row['B']: val = 1 else: val = -1 retur...
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Should I use encoding declaration in Python 3?

Python 3 uses UTF-8 encoding for source-code files by default. Should I still use the encoding declaration at the beginning of every source file? Like # -*- coding: utf-8 -*- ...
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PHP: Count a stdClass object

I have a stdClass object created from json_decode that won't return the right number when I run the count($obj) function. The object has 30 properties, but the return on the count() function is say 1. ...
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Converting an integer to a hexadecimal string in Ruby

Is there a built in way to convert an integer in Ruby into its hexadecimal equivalent? 5 Answers ...
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How to iterate through a DataTable

I need to iterate through a DataTable . I have an column there named ImagePath . 4 Answers ...
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Retrieve only static fields declared in Java class

... You can do it like this: Field[] declaredFields = Test.class.getDeclaredFields(); List<Field> staticFields = new ArrayList<Field>(); for (Field field : declaredFields) { if (java.lang.reflect.Modifier.isStatic(...
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jQuery hide element while preserving its space in page layout

Is there a way in jQuery where I can hide an element, but not change the DOM when it's hidden? I'm hiding a certain element but when it's hidden, the elements below it move up. I don't want that to happen. I want the space to stay the same, but the element to be shown/hidden at will. ...
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Grep regex NOT containing string

... list of regex patterns to grep to check against a syslog file. They are usually matching an IP address and log entry; 3 ...
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What's the difference between tag and release?

Using GitHub's API, I can't get the releases list, but I can get the tags list. 1 Answer ...
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Pull request without forking?

Here are steps of code contribution from the topic " How do I contribute to other's code in GitHub? " 5 Answers ...