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String[] things - POST BY LEW BALOCH

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POST BY LEW BALOCH


`String[] things` or `String things[]`?
Both are legal but one is wrong.
Yet we see people putting the brackets actually *after the variable* instead of with the base type where they belong.


Gasp!

The JLS says
"Brackets are allowed in declarators as a nod to the tradition of C and C++"
https://lnkd.in/dQ585t5c
but that doesn't read idiomatically in Java.

Or worse, brackets can appear after a method signature's parameter list:
Identifier ( [ReceiverParameter ,] [FormalParameterList] ) [Dims]

but:
"The declaration of a method that returns an array is allowed to place some or all of the bracket pairs that denote the array type after the formal parameter list. This syntax is supported for compatibility with early versions of the Java programming language. It is very strongly recommended that this syntax is not used in new code."
https://lnkd.in/dRAjpMMj

Think: is the type an array of String named `args` "String array" or "args array". Obviously since `args` is not a type, it's "String array".
So when you read
String[] args
String args[]
which one reads "a String array named 'args'"
and which one "a String named 'args', no wait, it's an array"?

Just because you can doesn't mean you should.

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