Doc Comments / Phobos /
Std Random
std.random 
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Comparing D's std.rand with C's rand
D's std.rand is 
slower than C's rand, but it's more random.
Shared Seed State
By the looks of the documentation - haven't checked the code - the std.random module shares a single seed state.
IMO this is wrong. What if one wanted to conduct several repeatable tests concurrently - perhaps because the measured aspects were running in multiple threads?
It should be rewritten as a class, as in:
class Random
{
public:
this(uint seed, uint index);
this();
public:
uint rand();
// Implementation
. . .
}
Also, why not use provide extensed sized random values, e.g. 64-bits, perhaps
combining 2 successive uints into a ulong? Sure, it can be done in client code,
but better to have it done once only in Phobos.
(from NG:digitalmars.D.bugs/834)
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