Category "syntax"

Best way to "negate" an instanceof

I was thinking if there exists a better/nicer way to negate an instanceof in Java. Actually, I'm doing something like: if(!(myObject instanceof SomeClass)) { /*

What does it mean += in Python?

What does it mean when it's like this: self.something += ('somethin',) What does "+=" mean and what does the comma mean?

Empty productions in RFC 5234 (Augmented BNF)

Does Augmented BNF (as specified by RFC 5234) allow matches to empty string? From reading grammar of the Augmented BNF itself (section 4, ABNF Definition of ABN

OCaml explicit type signatures

In Haskell, it is considered good practice to explicitly declare the type signature of your functions, even though it can (usually) be inferred. It seems like t

Python: Make class iterable

I have inherited a project with many large classes constituent of nothing but class objects (integers, strings, etc). I'd like to be able to check if an attribu