language features

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Quiz: Null in Python: Understanding Python's NoneType Object realpython.com
This is an 8-question interactive quiz from Real Python testing understanding of Python's `None` object. It covers `None` as a first-class object, its use as a default parameter, checking for it with identity operators, and `NoneType` in tracebacks.
Real Pythonrealpython.com2d1 min
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Kodebits Day 96: Vararg Parameters [FREE]kodeco.com
The post demonstrates Kotlin’s vararg parameter by defining a total function that sums any number of Int arguments, showing that total(2,4,6,8) prints 20. It’s a quick intro for Kotlin beginners.
Ray Wenderlichkodeco.com11h1 min
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Kodebits Day 78: Switch Where Clause [FREE]kodeco.com
A short Kodebits post shows how to add a where clause to a Swift switch case, letting you filter matches with an extra condition. It’s a quick syntax reminder rather than a deep dive.
Ray Wenderlichkodeco.com1mo1 min

Quiz: Null in Python: Understanding Python's NoneType Objectrealpython.com