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Using Pairs or 2-tuples in Java

Java does not include a built-in Pair or 2-tuple class in its core language. However, developers often need a simple way to group two related values without creating a separate class. Thankfully, several reliable options exist through the Java ecosystem and standard libraries. Popular ways to use Pairs in Java: Using…

Java

Answered Nov 3, 2025 · 763 Views Read answer →

Null object in Python

In Python, the concept of a "null object" is represented by the special built-in value None. It’s used to signify the absence of a value or a null result—similar to null in other programming languages like JavaScript or Java. What is None in Python? None is a singleton object of the NoneType class. It is commonly used…

Python

Answered Jun 4, 2025 · 653 Views Read answer →

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