Saturday, March 24, 2012

Explicit public declaration of interface methods. Not trusting your users' intelligence enough

Whereas C# doesn't allow this, Java does:

interface Device 
 public void doIt();

interface methods are always public and there's no reason to declare it explicitly so. Allowing that sort of thing reminds me of purported Hungarian notation:

int intCount;
int iCount;
string stringName;
string sName;

You can forgive the compiler for not enforcing compilation error on bad misuse of that Hungarian notation, but for the language being lenient on catching that redundant public thing is sort of not trusting the language's users intelligence enough. Think about it, you want your language users to always remember interface methods are public, then who are the audience of explicit public declaration of interface methods? Its non-users? :-)

Another redundancy:

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