Am 17.03.2014 17:36, schrieb Paul Sandoz:
Hi Sergey,
Thanks, you are right! I did not realize it copied the array into a local
variable, but that makes sense.
Here is the byte code generated by javac (9) for two different methods:
.....
Thanks from me too, this is great work.
I floated my question because of ...
Am 14.03.2014 16:46, schrieb Martin Buchholz:
+ final int size = a.length;
+ for (int i = 0; i < size; i++) {
I like to write this using the idiom
for (int i = 0, size = ...; i < size; i++)
This is not thread-proof (Given there is no: final E[] a = this.a;). If a becomes replaced
concurrently while looping, size becomes invalid as length of a.
Good to know, that foreach over array is always thread-proof and additionally performs at least
equal (except of the initial local caching) than a plain fortran-style loop.
-Ulf
