On 12/20/13 5:45 AM, Joseph Rushton Wakeling wrote:
On 20/12/13 10:06, Meta wrote:
void topN(alias less = "a < b",
SwapStrategy ss = SwapStrategy.unstable,
Range, RandomGen)(Range r, size_t nth, ref RandomGen rng)
if (isRandomAccessRange!(Range) && hasLength!Range
&& isUniformRNG!RandomGen) // <--- needs
std.random.isUniformRNG
{
static assert(ss == SwapStrategy.unstable,
"Stable topN not yet implemented");
while (r.length > nth)
{
auto pivot = uniform(0, r.length, rng);
// ... etc. ...
}
}
I had this idea fot a while, and Walter is favorable of it as well -
extend "import" for one-shot use. With that feature the example would
become:
void topN(alias less = "a < b",
SwapStrategy ss = SwapStrategy.unstable,
Range, RandomGen)(Range r, size_t nth, ref RandomGen rng)
if (isRandomAccessRange!(Range) && hasLength!Range
&& import.std.random.isUniformRNG!RandomGen)
{ ... }
In this case "import" would syntactically be placed at the beginning of
a qualified name, meaning "import this module lazily and look up the
symbol in it".
This would simplify quite a lot of two-liners into one-liners in other
places, too.
Andrei
