10.08.2010 9:19, Kagamin пишет:
Andrei Alexandrescu Wrote:
FWIW we've been talking a long time ago about a simple lowering - if the
last argument to a function is a delegate, allow moving the delegate's
body outside of the function:
fun(a, b, c) { body }
|
V
fun((a, b, c) { body });
I don't think, doOnce will work. Though, it's a useful idiom.
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Maybe this one would:
block_template doOnce(string F = __FILE__, int L = __LINE__)() {
static bool hasRun = false;
if (!hasRun) {
hasRun = true;
$
}
}
or this one (with proposed lowering syntax):
void doOnce(string F = __FILE__, int L = __LINE__)(void delegate() dg)
{
static bool hasRun = false;
if (!hasRun) {
hasRun = true;
dg();
}
}
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**
