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Ask HN: Why should variable shadowing be allowed?
Today I came across a term I had not heard of before: variable shadowing.
The general opinion about variable shadowing is that it is frowned upon for code readability and comprehension.
What would be a use case for programming languages to allow variable shadowing?
- PaulHoule 7y agoIn java I like using variable shadowing in constructors, that is, I write something like: public SomeObject(String aField) { this.aField = aField; } I think this promotes clarity for the user of the code, although you can possibly make the mistake of writing aField = aField; but if you declare aField as final, the compiler will give you an error if you make that mistake.