Lambda recursive ...

[Ricky Clarkson]

The State of the Lambda #4 seems to suggest that this would apply to local
variables too:

'Fortunately, by simply refining the "initialized-before-use" analysis that
determines when variables can be referenced, ...'

That seems to be talking about definite assignment, not the checking that
applies to fields.
On Oct 19, 2012 10:20 AM, "Aleksey Shipilev" <aleksey.shipilev at oracle.com>
wrote:

> On 10/19/2012 05:09 PM, Boaz Nahum wrote:
> > interface FactInt { int invoke(int i); }
> >
> >  FactInt factorial = i ->
> >                 { return i == 0 ? 1 : i * factorial.invoke(i - 1); };
> >
> > But the compile (b61) says:
> > error: variable factorial might not have been initialized
> >
> > How can I write recursive expression like this ?
>
> Lambda can not capture the uninitialized local variable; the trick is to
> use fields, in which case lambda will capture "this" or the reference to
> static field [1].
>
> -Aleksey.
>
> [1]
>
> https://github.com/shipilev/jdk8-lambda-samples/blob/master/src/test/java/net/openjdk/lambda/FibonacciTest.java
>
>
>