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what is the most efficient way of counting occurrences in pandas?
I have a large (about 12M rows) dataframe df with say:
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Auto detect mobile browser (via user-agent?) [closed]
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XPath: How to check if an attribute exists?
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167
Short and sweet:
//*[@foo]
Of course you should use a more specific expression. But with [@...
Firing a double click event from a WPF ListView item using MVVM
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How to get pixel data from a UIImage (Cocoa Touch) or CGImage (Core Graphics)?
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Case insensitive string compare in LINQ-to-SQL
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As you say, there are some important differences between ToUpper and ToLower, and only one is ...
Regular Expression to find a string included between two characters while EXCLUDING the delimiters
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How to generate Javadoc HTML files in Eclipse?
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edited Sep 21 '15 at 17:00
System
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