Owen Jacobson <angrybaldguy@gmail.com>
Sat, 5 Feb 2011 10:46:27 -0500
On 2011-02-05 10:41:20 -0500, Joshua Cranmer said:

On 02/05/2011 01:29 AM, Lawrence D'Oliveiro wrote:

In message<iii71v$3ud$1@lust.ihug.co.nz>, Lawrence D'Oliveiro wrote:

How many hundreds of times a day do Java programms write something like

classname varname = new classname(args);

And this just gets worse with generic types, e.g.

GenericClass<Type1, Type2> x = new GenericClass<Type1, Type2>;

And Java 7's Project Coin introduced the diamond notation for those
people who really can't type (or adhere strictly to 80-character line
GenericClass<Type1, Type2> x = new GenericClass<>();

But even then, it really doesn't matter that much since you can easily
get a macro in any competent IDE to fill in the LHS of that expression
for you if you really, really, really want to save keystrokes.

Note that this is only useful when the initialization expression has
exactly the type parameters of the declaration. In cases like

    Set<? extends Number> numbers = new HashSet<Integer>();

the <> shorthand (and almost any other proposed shorthand, including,
unfortunately, inference by flow analysis) is of no use.


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