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numpy: most efficient frequency counts for unique values in an array
In numpy / scipy , is there an efficient way to get frequency counts for unique values in an array?
16 Answers
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Use 'class' or 'typename' for template parameters? [duplicate]
When defining a function template or class template in C++, one can write this:
10 Answers
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std::vector versus std::array in C++
What are the difference between a std::vector and an std::array in C++? When should one be preferred over another? What are the pros and cons of each? All my textbook does is list how they are the same.
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When exactly are onSaveInstanceState() and onRestoreInstanceState() called?
The following figure (from the official doc ) describes the well-known lifecycle of an Android activity:
5 Answers
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To switch from vertical split to horizontal split fast in Vim
How can you switch your current windows from horizontal split to vertical split and vice versa in Vim?
8 Answers
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How would you do a “not in” query with LINQ?
I have two collections which have property Email in both collections. I need to get a list of the items in the first list where Email does not exist in the second list. With SQL I would just use "not in", but I do not know the equivalent in LINQ. How is that done?
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JPA getSingleResult() or null
I have an insertOrUpdate method which inserts an Entity when it doesn't exist or update it if it does. To enable this, I have to findByIdAndForeignKey , if it returned null insert if not then update. The problem is how do I check if it exists? So I tried getSingleResult . But it throws an ex...
Extract date (yyyy/mm/dd) from a timestamp in PostgreSQL
I want to extract just the date part from a timestamp in PostgreSQL.
7 Answers
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Iterate two Lists or Arrays with one ForEach statement in C#
This just for general knowledge:
11 Answers
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WPF ToolBar: how to remove grip and overflow
In a nested WPF ToolBarPanel-ToolBar-Menu we want to get rid of the grip handle to the left and the overflow area to the right. they are both grayed out, but we'd like them to not be displayed at all.
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