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Programming, Python

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Union of dict objects in Python [duplicate]

This question already has answers here: How do I merge two dictionaries in a single expression (take union of dictionaries)? (48 answers) Closed ...

June 2, 2022
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Programming, string

IT Nursery

Python: most idiomatic way to convert None to empty string?

What is the most idiomatic way to do the following? def xstr(s): if s is None: return '' else: return s s = ...

June 2, 2022
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When to use std::size_t?

I’m just wondering should I use std::size_t for loops and stuff instead of int? For instance: #include <cstdint> int main() { for (std::size_t ...

May 23, 2022
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What is the pythonic way to detect the last element in a ‘for’ loop?

I’d like to know the best way (more compact and “pythonic” way) to do a special treatment for the last element in a ...

May 21, 2022
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How do I reverse an int array in Java?

I am trying to reverse an int array in Java. This method does not reverse the array. for(int i = 0; i < ...

May 19, 2022
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How can I loop through a C++ map of maps?

How can I loop through a std::map in C++? My map is defined as: std::map< std::string, std::map<std::string, std::string> > For example, the above ...

May 17, 2022
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How to implement the factory method pattern in C++ correctly

There’s this one thing in C++ which has been making me feel uncomfortable for quite a long time, because I honestly don’t know ...

May 10, 2022
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Python idiom to return first item or None

I’m calling a bunch of methods that return a list. The list may be empty. If the list is non-empty, I want to ...

May 10, 2022
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Get the key corresponding to the minimum value within a dictionary

If I have a Python dictionary, how do I get the key to the entry which contains the minimum value? I was thinking ...

May 7, 2022
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How can I initialise a static Map?

How would you initialise a static Map in Java? Method one: static initialiser Method two: instance initialiser (anonymous subclass) or some other method? ...

April 14, 2022
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